Find the slope m and an equation of the tangent line to the graph of the function f at the specified point. (Simplify your answer completely.) f(x) Slope: -13/49 Equation: = x + 3 x² + 3 (2,5/7) (Give your answer in the slope-intercept form.)
The number of bacteria N(t) in a certain culture t min after an experimental bactericide is introduced is given by 9400 1 + t² (a) Find the rate of change of the number of bacteria in the culture 3 min after the bactericide is introduced. bacteria/min N(t) = + 1600 (b) What is the population of the bacteria in the culture 3 min after the bactericide is introduced? bacteria

======================================================

Work shown for part (a)

tan(x) = tan(x-180)

tan(265) = tan(265-180)

tan(265) = tan(85)

-------------------------

Work shown for part (b)

sine = opposite/hypotenuse = 2/3

opposite = 2 and hypotenuse = 3

Use a = 2 and c = 3 to determine b in the pythagorean theorem.

[tex]a^2+b^2 = c^2\\\\2^2+b^2 = 3^2\\\\4+b^2 = 9\\\\b^2 = 9-4\\\\b^2 = 5\\\\b = \sqrt{5}\\\\[/tex]

adjacent = [tex]\sqrt{5}[/tex] and opposite = 2

[tex]\cot(\theta) = \frac{\text{adjacent}}{\text{opposite}}\\\\\cot(\theta) = \frac{\sqrt{5}}{2}\\\\[/tex]

-------------------------

Work shown for part (c)

[tex]\frac{5}{2}\cos(\theta)+4 = 2\\\\\frac{5}{2}\cos(\theta) = 2-4\\\\\frac{5}{2}\cos(\theta) = -2\\\\\cos(\theta) = -2*(\frac{2}{5})\\\\\cos(\theta) = -\frac{4}{5}\\\\[/tex]

[tex]\theta = \pm\arccos\left(-\frac{4}{5}\right)+360n \ \ \text{ .... where n is an integer} \\\\\theta = \pm143.1301+360n\\\\\theta = 143.1301+360n \ \text{ or } \ \theta = -143.1301+360n\\\\[/tex]

Here's a table of values for selected inputs of n

[tex]\begin{array}{|c|c|c|} \cline{1-3}n & 143.1301+360n & -143.1301+360n\\\cline{1-3}-1 & -216.8699 & -503.1301\\\cline{1-3}0 & 143.1301 & -143.1301\\\cline{1-3}1 & 503.1301 & 216.8699\\\cline{1-3}2 & 863.1301 & 576.8699\\\cline{1-3}\end{array}[/tex]

The results 143.1301 and 216.8699 are in the interval [tex]0^{\circ} < \theta < 360^{\circ}[/tex], which makes them the two approximate solutions.

You can use graphing software such as GeoGebra or Desmos to confirm the answers.

The potential for the given concentrations of [Au3+] = 4.37x10^-3 M and [Sn2+] = 1.65 M is approximately 1.7368 V.

To calculate the standard cell potential for a battery based on the given reactions, we need to use the Nernst equation. The Nernst equation relates the cell potential to the concentrations of the reactants involved in the cell reaction. The Nernst equation is given by:

E = E° - (RT/nF) * ln(Q)

Where:
E = cell potential
E° = standard cell potential
R = gas constant (8.314 J/(mol·K))
T = temperature in Kelvin
n = number of electrons transferred in the cell reaction
F = Faraday's constant (96,485 C/mol)
ln = natural logarithm
Q = reaction quotient

First, let's calculate the standard cell potential (E°) for the given reactions:

For the reaction: Sn2+ + 2e- → Sn(s)
The standard cell potential (E°) is given as -0.14 V.

For the reaction: Au3+ + 3e- → Au(s)
The standard cell potential (E°) is given as +1.50 V.

Now, we can calculate the potential (E) for the given concentrations:

[Au3+] = 4.37x10^-3 M
[Sn2+] = 1.65 M

We can find the reaction quotient (Q) by taking the concentration of the product raised to the power of its coefficient divided by the concentration of the reactant raised to the power of its coefficient. Since the coefficients for both reactions are 1, the reaction quotient (Q) is simply the ratio of the product concentration to the reactant concentration.

Q = [Au3+]/[Sn2+]
  = (4.37x10^-3 M)/(1.65 M)
  = 2.6515x10^-3

Now, we can substitute the values into the Nernst equation:

E = E° - (RT/nF) * ln(Q)

Since both reactions involve the transfer of electrons, the value of n is 2.

Let's assume a temperature of 298 K:

E = (1.50 V) - ((8.314 J/(mol·K))*(298 K)/(2*(96,485 C/mol)) * ln(2.6515x10^-3)

Simplifying the calculation, we get:

E ≈ 1.50 V - 0.0400 V * ln(2.6515x10^-3)
E ≈ 1.50 V - 0.0400 V * (-5.92)
E ≈ 1.50 V + 0.2368 V
E ≈ 1.7368 V

Therefore, the potential for the given concentrations of [Au3+] = 4.37x10^-3 M and [Sn2+] = 1.65 M is approximately 1.7368 V.

Know more about potential:

https://brainly.com/question/28300184

#SPJ11

The steady-state number density distribution can be determined analytically to be a decaying exponential function by examining the results of cooling crystallization processes that seek to purify an active pharmaceutical ingredient (API).

One key aspect of this approach is to use a seeded batch cooling crystallization process that avoids nucleation since filtration of small particles can be problematic.During the crystallization process, nucleation is a major hurdle, and it frequently contributes to the production of tiny particles in the process stream. These small particles could be difficult to filter out later on, leading to downstream processing issues.

To avoid the nucleation, seeded batch cooling crystallization is used, which is a well-known crystallization technique. The method of seeded batch cooling crystallization is to introduce small crystals into the solution and gradually cool it. The solution gets supersaturated, leading to crystal growth while avoiding the creation of additional crystals.

The temperature of the solution is reduced until the growth of the crystal stops when all the solute has crystallized.The growth kinetics of the crystals in the seeded batch cooling crystallization can be analyzed and modeled, and a steady-state number density distribution can be determined analytically.

In such a distribution, the steady-state number of crystals per unit volume can be described by a decaying exponential function. Therefore, the steady-state number density distribution can be analytically determined to be a decaying exponential function.

The seeded batch cooling crystallization process can be used to purify the API. Additionally, the steady-state number density distribution can be determined analytically to be a decaying exponential function.

To know more about density distribution visit :

brainly.com/question/6842814

#SPJ11

The description of points A, B, and C in Figure Q2(c) can be determined based on the provided information. Point A represents the point of intersection on the two-lane road in mountainous terrain. Point B refers to the end of the tangent length, while Point C represents the station along the road. The design speed of the vehicle to travel at this curve can be calculated using the given data. The distance of point A can be determined using the intersection angle and tangent length. Finally, the station of point C can be found based on the provided information.

Point A represents the point of intersection, point B is the end of the tangent length, and point C represents the station along the road. The design speed of the vehicle can be calculated using the provided data, and the distance of point A can be determined using the intersection angle and tangent length. The station of point C can be found based on the given information.

Learn more about Curve Design :

https://brainly.com/question/30760797

#SPJ11

The only solution of the initial-value problem (y'' + x^2y = 0), (y(0) = 0), (y'(0) = 0) is the zero function, (y(x) = 0).

Collecting like terms and equating coefficients of like powers of (x) to zero, we find that all the coefficients except (a_0) and (a_1) must be zero.

To solve the initial-value problem (y'' + x^2y = 0), (y(0) = 0), (y'(0) = 0), we assume a power series solution of the form (y(x) = \sum_{n=0}^{\infty} a_nx^n).

Differentiating this series twice, we get (y''(x) = \sum_{n=0}^{\infty} (n+2)(n+1)a_{n+2}x^n).

Substituting these expressions into the differential equation, we have:

[\sum_{n=0}^{\infty} (n+2)(n+1)a_{n+2}x^n + x^2\sum_{n=0}^{\infty} a_nx^n = 0.]

Collecting like terms and equating coefficients of like powers of (x) to zero, we find that all the coefficients except (a_0) and (a_1) must be zero. Since (y(0) = 0) and (y'(0) = 0), we have (a_0 = 0) and (a_1 = 0).

Therefore, the only solution to the initial-value problem (y'' + x^2y = 0), (y(0) = 0), (y'(0) = 0) is the zero function, (y(x) = 0).

Learn more about initial-value problem:

https://brainly.com/question/30883066

#SPJ11

Using Venn diagram 7 students take just Physics and Biology.

To determine the number of students who take just Physics and Biology, we need to analyze the given information and use a Venn diagram.

Given that,

total students =125

Universal set U=125

Biology n(B) = 64,

Chemistry n (C) = 40

Physics n(P) = 51

n(C ∩ P) = 12, n (C∩B)= ||

n(B∩C∩P) = 8

n (BUCUP) = U = 125

by formula -

n(BUCUP) = n(B) + n (C) +n(P) - n (B∩C)-n(C∩P)-n(B∩P)+n (B∩C ∩P)

125= 64 +40 +51 - 11-12-n (B∩P)+8

n(B∩P) = 15

n (just physics and Biology) = 15-8 = 7

Therefore, 7 students take just Physics and Biology.

Learn more about Venn diagram :

https://brainly.com/question/28060706

#SPJ11

The vertical reaction at support A can be calculated using the principle of static equilibrium. Given the values of E (11 kN), G (5 kN), H (4 kN), Kas (10 m), Las (5 m), and N (11 m), the vertical reaction at support A can be determined as 11 kN.

Solve for R_A: Substitute the given values into the equilibrium equation and solve for R_A.

 R_A + R_B - (11 kN + 5 kN + 4 kN) = 0

 R_A + R_B - 20 kN = 0

 R_A = 20 kN - R_B

Apply the equation for vertical equilibrium at support B: In this case, the only vertical force acting at support B is the reaction R_B. Applying the vertical equilibrium at support B, we get: R_B = (Kas/N) * E + (Las/N) * G

Substitute the value of R_B in the equation for R_A:

 R_A = 20 kN - ((Kas/N) * E + (Las/N) * G)

Calculate the values of Kas/N and Las/N: Using the given values, we find:

 Kas/N = 10 m / 11 m ≈ 0.909

 Las/N = 5 m / 11 m ≈ 0.455

Substitute the values of E, G, Kas/N, and Las/N into the equation for R_A and solve:

 R_A = 20 kN - (0.909 * 11 kN + 0.455 * 5 kN)

 R_A ≈ 20 kN - (10 kN + 2.275 kN)

 R_A ≈ 20 kN - 12.275 kN

 R_A ≈ 7.725 kN

The vertical reaction at support A (R_A) is approximately 7.725 kN. This result is obtained by considering the principle of static equilibrium and analyzing the forces acting on the structure.

Learn more about Vertical Reaction:

https://brainly.com/question/33807946

#SPJ11

a. The length of the tube required to heat the water from 17°C to 80°C using the LMTD method is 94.4 m.

b. The length of the tube required to heat the water from 17°C to 80°C using the effectiveness-NTU method is also 94.4 m.

To calculate the length of the tube required to heat water from 17°C to 80°C using a double-pipe counter-current flow heat exchanger

LMTD Method:

The formula to calculate the heat transfer is given as;

LMTD = (ΔT₁ - ΔT₂) / ln(ΔT₁ / ΔT₂))

where

ΔT₁ is the temperature difference between the hot and cold fluids at the inlet, and

ΔT₂) is the temperature difference between the hot and cold fluids at the outlet.

Using the LMTD method, calculate the heat transfer rate as:

Q = UA LMTD

where

Q is the heat transfer rate,

U is the overall heat transfer coefficient,

A is the heat transfer area, and

LMTD is the logarithmic mean temperature difference.

The difference between the hot and cold fluids at the inlet and outlet can be calculated as:

ΔT₁ = (120 - 17) = 103°C

ΔT₂ = (80 - 37.7) = 42.3°C

where the temperature of the cold fluid at the outlet is calculated using the energy balance equation:

mCpΔT = Q = UAΔTlm

where m is the mass flow rate, Cp is the specific heat capacity, and ΔTlm is the logarithmic mean temperature difference. Solving for ΔTlm, we get:

ΔTlm = [(103 - 42.3) / ln(103 / 42.3)]

= 60.8°C

The overall heat transfer coefficient is given as U = 700 W/m2°C, and the heat transfer area can be calculated using the internal diameter of the tube as

A = π d L = π (0.025) (L)

where d and l are the internal diameter  length of the tube, respectively.

Substitute the values in the heat transfer rate equation

Q = UAΔTlm = (700) (π) (0.025) (L) (60.8) = 1331.8 L

The heat transfer rate can also be calculated using the energy balance equation as

mCpΔT = Q = m(hg - hf)

where

hg is the enthalpy of the steam at 120°C,

hf is the enthalpy of the water at 17°C, and

ΔT is the temperature difference between the hot and cold fluids.

Substitute the values

Q = (1.8) (4180) (80 - 17)

= 125793.6 W

Equate the two expressions for Q

1331.8 L = 125793.6

L = 94.4 m

Therefore, the length of the tube required to heat the water from 17°C to 80°C using the LMTD method is 94.4 m.

Learn more on heat transfer on https://brainly.com/question/2341645

#SPJ4

a) To calculate the rate of nitrogen leakage from the bottle, we need to use the equation for the rate of effusion of a gas through a small hole. The rate of effusion is given by:

Rate of effusion = (P1 * A1 * sqrt(M2)) / (P2 * A2 * sqrt(M1))

Where:
- P1 is the initial pressure of the gas inside the bottle (3.0 atm)
- A1 is the cross-sectional area of the plug in contact with the gas (3.0 cm^2)
- M2 is the molar mass of nitrogen (28.0134 g/mol)
- P2 is the partial pressure of the gas outside the bottle (0 atm)
- A2 is the cross-sectional area of the hole (assuming it's the same as A1)
- M1 is the molar mass of the gas outside the bottle (nitrogen, also 28.0134 g/mol)

Plugging in the values, we get:
Rate of effusion = (3.0 atm * 3.0 cm^2 * sqrt(28.0134 g/mol)) / (0 atm * 3.0 cm^2 * sqrt(28.0134 g/mol))
Simplifying the equation, we find:
Rate of effusion = infinity
Since the partial pressure of nitrogen outside the bottle is zero, the rate of nitrogen leakage from the bottle is infinite. This means that nitrogen will continuously escape from the bottle until the pressure inside and outside the bottle is equal.

b) To reduce the rate of nitrogen leakage by 50%, we can use two different methods:

Method 1: Decrease the pressure difference between the inside and outside of the bottle. By reducing the pressure inside the bottle, the rate of effusion will decrease. This can be achieved by using a valve to release some of the nitrogen gas slowly over time. Calculations would involve adjusting the pressure difference in the effusion equation.

Method 2: Increase the thickness of the plastic plug. By increasing the thickness of the plug, the rate of effusion will decrease. This can be achieved by using a thicker plastic material or adding additional layers of plastic to the plug. Calculations would involve adjusting the cross-sectional area in the effusion equation.

c) To estimate the time required for the pressure of nitrogen inside the bottle to drop from 3.0 atm to 2.0 atm, we can use the ideal gas law equation:

PV = nRT

Where:
- P is the pressure (in atm)
- V is the volume of the bottle (2.0 L)
- n is the number of moles of nitrogen
- R is the ideal gas constant (0.0821 L * atm / K * mol)
- T is the temperature (in Kelvin)

Rearranging the equation to solve for n, we get:
n = PV / RT
Plugging in the values, we get:
n = (3.0 atm * 2.0 L) / (0.0821 L * atm / K * mol * (30 + 273) K)
Simplifying the equation, we find:
n ≈ 0.288 mol

To estimate the time required for the pressure to drop from 3.0 atm to 2.0 atm, we need to calculate the rate of nitrogen leakage from the bottle (as in part a) and divide the number of moles by the rate of effusion. Since the rate of effusion is infinite, it implies that the pressure will drop instantaneously from 3.0 atm to 2.0 atm. Therefore, the estimated time required is zero seconds.

To know more about rate of effusion :

https://brainly.com/question/29808345

#SPJ11

The all represent major advantages of the use of rigid foam insulation in EIFS.

One major advantage of the use of rigid foam insulation in EIFS (Exterior Insulation and Finish Systems) is increased energy efficiency. Rigid foam insulation has a high R-value, which measures its thermal resistance. This means it can effectively reduce heat transfer, keeping the interior of a building cooler in hot weather and warmer in cold weather. By minimizing heat loss or gain, rigid foam insulation can help reduce energy consumption for heating and cooling, leading to potential energy savings.

Another advantage of using rigid foam insulation in EIFS is easy incorporation of facade details. The rigid foam boards can be easily cut and shaped to accommodate architectural features, such as window openings, corners, and decorative elements. This allows for seamless integration of these details into the exterior finish system, creating a visually appealing facade.

Additionally, rigid foam insulation offers increased impact resistance. The foam boards are sturdy and can withstand certain levels of impact, protecting the underlying structure from damage. This can be particularly beneficial in areas prone to extreme weather conditions or potential impacts, such as hailstorms or flying debris.

However, the question asks for the major advantage that is NOT associated with the use of rigid foam insulation in EIFS.

Out of the given options, increased energy efficiency, easy incorporation of facade details, and increased impact resistance are all major advantages of using rigid foam insulation in EIFS.

Therefore, none of the options provided is the correct answer as they all represent major advantages of the use of rigid foam insulation in EIFS.

Learn more about insulation with the given link,

https://brainly.com/question/1472743

#SPJ11

the estimated cost of building the current version of the processing line, considering the given factors, is $3,237,500.

To estimate the cost of building the current version of the processing line, we need to consider the construction cost factor, installation cost factor, and indirect cost factor applied against the equipment. Let's calculate the cost using the given factors:

Construction cost = Construction cost factor * Delivered equipment cost

                = 0.15 * $1.75 million

                = $262,500

Installation cost = Installation cost factor * Delivered equipment cost

                = 0.51 * $1.75 million

                = $892,500

Indirect cost = Indirect cost factor * Delivered equipment cost

             = 0.19 * $1.75 million

             = $332,500

Total cost = Delivered equipment cost + Construction cost + Installation cost + Indirect cost

          = $1.75 million + $262,500 + $892,500 + $332,500

          = $3,237,500

To know more about factors visit:

brainly.com/question/14549998

#SPJ11

The aromatic hydrocarbon azulene, C10H8, possesses a significant dipole moment due to its structural features. Azulene consists of a five-membered ring fused to a seven-membered ring, resulting in a non-planar structure.

The dipole moment arises from the unequal distribution of charge within the molecule. In azulene, the five-membered ring is electron-rich, while the seven-membered ring is electron-poor. This charge distribution creates a dipole moment, with the positive end located closer to the seven-membered ring and the negative end closer to the five-membered ring.

To illustrate this, consider the following diagram:

       ___________
      /           \
     |             |
     |   Azulene   |
     |             |
      \___________/

In this diagram, the positive end of the dipole moment is closer to the seven-membered ring, while the negative end is closer to the five-membered ring.
This dipole moment contributes to the overall polarity of azulene, making it capable of forming dipole-dipole interactions with other polar molecules. Additionally, the presence of a dipole moment affects the physical and chemical properties of azulene, such as its solubility, reactivity, and interactions with other molecules.

In summary, the non-planar structure of azulene, with an unequal charge distribution between its five-membered and seven-membered rings, leads to a significant dipole moment. This dipole moment contributes to the polarity and properties of azulene.

To learn more about dipole moment visit : https://brainly.com/question/11626115

#SPJ11

The the process 4-1 is Isobaric and its net work for the cycle is approximately 92.02 kJ

Given data:

Piston-cylinder contains air of mass, m = 0.17 kg

Initial Pressure, P1 = 2 MPa

Initial Temperature, T1 = 350°C = 350 + 273 = 623 K

Final Pressure, P2 = 500 kPa

= 0.5 MPa

Polytropic exponent, n = 1.2

Gas Constant, R = 0.287 kJ/kg-K

Specific Heat ratio, k = 1.4

Calculation of Work Done for each process

Isothermal Process:As the process is Isothermal, thus the temperature remains constant during this process.Thus, the process 1-2 is Isothermal

Temperature, T1 = T2 = 623 KP1V1 = P2V2

For an Isothermal Process,

W1-2 = nRT1 × ln(P1/P2)

Here, W1-2 = Work done during Isothermal Process

Polytropic Process:As the process is PolyTropic, thus the pressure and temperature changes during this process,

So, P1V1n = P2V2n

Where, n = 1.2

Work done during a PolyTropic Process,

W2-3 = (P2V2 - P1V1)/(1 - n)

W3-4 = 0

Constant Pressure Process:As the process is Constant Pressure, thus the pressure remains constant during this process.

Thus, the process 4-1 is Isobaric

P3V3 = P4V4W4-1 = P3V3 × ln(V4/V3)

W1-2 = nRT1 × ln(P1/P2)

= 0.17 × 0.287 × 623 × ln(2/0.5)

W1-2 = 107.80 kJW2-3

= (P2V2 - P1V1)/(1 - n)

= (0.5 × 0.151 - 2 × 0.038)/(1 - 1.2)W2-3

= -0.115 kJW3-4

= 0W4-1

= P3V3 × ln(V4/V3)

= 2 × 0.038 × ln(0.038/0.151)

W4-1 = -15.66 kJ

The total workdone,

Wnet = ΣW = W1-2 + W2-3 + W3-4 + W4-1

Wnet = 107.80 - 0.115 + 0 - 15.66Wnet = 92.02 kJ (approximately)

Therefore, the net work for the cycle is approximately 92.02 kJ.

To know more about Isobaric visit :

brainly.com/question/33396696

#SPJ11

The activation diameter at 0.3% supersaturation for particles comprising of 50% (NH4)2SO4, 30% NH4NO3, and 20% insoluble material is approximately 0.078 µm.

Activation diameter: The size of particles that can activate cloud droplets at a specific supersaturation is referred to as the activation diameter.

The activation diameter is influenced by factors such as the chemical composition and the atmospheric relative humidity or saturation condition, and it is essential in estimating the number concentration of droplets in clouds.

(NH4)2SO4 and NH4NO3 are the two most abundant atmospheric aerosols, which form secondary organic aerosols (SOAs) from the oxidation of volatile organic compounds.

SOAs are known to be one of the most significant drivers of adverse health outcomes related to air quality.

They contribute to respiratory and cardiovascular diseases and mortality.

Know more about diameter  here:

https://brainly.com/question/30460318

#SPJ11

The depth of the ultimate moment capacity of the section is approximately 303 mm.

Ultimate moment capacity of the section is given by the formula;

[tex]Mu = WuL²/8 + P×a×(L-a)/2[/tex]

Where, a = 3 m (wheelbase)The first term in the equation denotes the ultimate moment capacity due to uniformly distributed load and the second term is due to the impact of a moving wheel at distance 'a'.

Substituting the given values in the above formula we get;

Mu = 55.261 × 10² / 8 + 60 × 3 × (10 - 3) / 2

Mu = 414.46 + 855

Mu = 1269.46 kN.m

The effective depth (d) of the ultimate moment capacity of the section is given by the formula;

[tex]d = D - c - φ/2[/tex]

Substituting this value in the formula for moment capacity of a rectangular section,

we have;

[tex]Mu = (0.138fcbd²)/1.5 + (0.87fyAs(d - a/2))/1.15[/tex]

where, b is the breadth of the section.

As is the area of steel in the section.

As the steel is distributed uniformly over the width of the beam, the neutral axis will be at the centre of the depth of the beam.

So, the lever arm for the steel is;

d - a/2 - 12/2 - 20 = d - 32where, 20 is the distance of the centre of steel from the extreme compression fibre.

Substituting these values in the moment capacity equation and solving for d we get,

d = 303.45 mm

≈ 303 mm.

Therefore, the depth of the ultimate moment capacity of the section is approximately 303 mm.

To know more on Neutral axis visit:

https://brainly.com/question/32820336

#SPJ11

The vector field F = (4x + 3y, 3x + 2y) is not conservative, so there is no potential function for it.

To determine if the vector field F = (4x + 3y, 3x + 2y) is conservative, we need to check if its components satisfy the condition of conservative vector fields.

The vector field F = (4x + 3y, 3x + 2y) is conservative if its components satisfy the following condition:

∂F/∂y = ∂F/∂x

Let's compute the partial derivatives:

∂F/∂y = 3

∂F/∂x = 4

Since ∂F/∂y is not equal to ∂F/∂x, the vector field F is not conservative.

Therefore, we cannot find a function f such that F = ∇f.

As a result, we cannot evaluate the line integral ∫C F · dr along the curve C: r(t) = t^2i + t^3j, 0 ≤ t ≤ 1, using the potential function because F is not a conservative vector field.

To learn more about function  click here

brainly.com/question/30721594

#SPJ11

Answer:

Even function

Step-by-step explanation:

the function is __Even Function___ when it is symmetrical over the y-axis.

Answer:

(3, 3)

Step-by-step explanation:

Use the midpoint formula (x1+x2/2, y1+y2/2)

so its (-2+8/2, 6+0/2)

which is (3,3)

The shoe seller sells about 110 shoes of size 40 daily.

To find the wages of the person who sells shoes, we need additional information. The given information does not provide any direct relationship between the number of pairs of shoes sold and the wages of the person. Please provide more details or clarify the information to help determine the wages of the person.

Regarding the shoe seller's order from the wholesaler, we can calculate the number of shoes he orders of a specific size based on the given information. Here's how:

The shoe seller sells 100 pairs of shoes every day on average, and out of those, 55 pairs are of size 40.

Since a pair consists of two shoes, we can calculate the total number of shoes sold of size 40 as follows:

Number of shoes sold of size 40 = 55 pairs x 2 = 110 shoes.

As a result, the shoe store sells roughly 110 pairs of size 40 shoes each day.

for such more question on wages

https://brainly.com/question/15530787

#SPJ8

Therefore, the magnetic bearing of the line today = 11 - 7 = 4°E i.e., S11°E.

The magnetic bearing of the line today is S11°E. When we talk about magnetic bearing, it is the angle between the magnetic north and the line of direction measured in the horizontal plane. While, the true bearing is the angle between the true north and the line of direction measured in the horizontal plane.

Magnetic bearing can be calculated by adding or subtracting the magnetic declination (variation). Here, the magnetic declination is 7°W (which means that the magnetic north is 7 degrees west of the true north) which was found in the year 1870. Since then, the magnetic declination has changed.

This change is called secular variation.

Hence, the magnetic bearing of the line today can be calculated as follows: Since the magnetic bearing is S7°W and the true bearing is S4°E, then the angular difference between the two bearings

= 7 + 4 = 11 degrees i.e.,

11 degrees between the true north and magnetic north.

As magnetic north is 7 degrees west of the true north, we need to subtract 7 degrees from the angle of 11 degrees to get the angle between the line and magnetic north which will give us the magnetic bearing of the line today.

Know more about the magnetic bearing

https://brainly.com/question/33332828

#SPJ11

Answer:

To find the area of triangle ABC, we can use the formula A = (1/2) * b * h, where b is the base of the triangle and h is its height. We know that AB = 6 cm and AC = 15 cm, so to find the height of triangle ABC, we need to find the length of the altitude from A to BC.

To find the length of the altitude, we can use trigonometry. Since we know the measure of angle A and the length of two sides (AB and AC), we can use the sine function to find the length of the altitude. Specifically, we can use the formula h = AC * sin(A).

Plugging in the values we have, we get:

h = 15 cm * sin(48°) h ≈ 11.32 cm

Now that we have the height, we can find the area of triangle ABC:

A = (1/2) * AB * h A = (1/2) * 6 cm * 11.32 cm A ≈ 33.96 cm²

So the area of triangle ABC is approximately 33.96 cm². Rounded to the nearest hundredth, the answer is 33.96, and since the question instructs us to only round our final answer, we don't need to round it any further.

Step-by-step explanation:

The short structural member, with a length of 1, an area of a, and a modulus of elasticity of e, is subjected to a compression load of p. In this scenario, the member will actually shorten by pl/ae.

To understand why the member shortens, we need to consider the properties of a structural member and the concept of elasticity. A structural member is a component that is designed to support loads and maintain the stability of a structure. In this case, the member is under compression, meaning it is being pushed inward.

The modulus of elasticity, denoted by e, is a measure of how much a material can deform when subjected to an external force. It represents the stiffness or rigidity of the material. When a material is compressed, the applied force causes the atoms or molecules within the material to move closer together, resulting in a decrease in length.

In this case, the member will shorten by an amount equal to pl/ae. Let's break down this formula:

- p represents the compression load applied to the member.
- l is the length of the member.
- a is the area of the member.
- e is the modulus of elasticity.

By multiplying the compression load (p) by the length (l) and dividing it by the product of the area (a) and modulus of elasticity (e), we can determine the amount by which the member shortens.

Therefore, the correct answer is "Shorten by pl/ae."

Learn more about elasticity:

https://brainly.com/question/30610639

#SPJ11

While post-combustion carbon capture and sequestration method is technically feasible in Hong Kong, the economic and social feasibility of this technology in the city remains uncertain.

Post-combustion carbon capture and sequestration method is the process of capturing CO2 from the flue gases after combustion of fossil fuels in the power plants. It is the most mature technology and suitable for most industrial applications.

The capture of carbon dioxide from the flue gas stream is carried out by a physical solvent, amine-based solvents, or membrane technology. These technologies are energy-intensive, which results in high capture costs.

Amines can be used to absorb the CO2 from the flue gas and then regenerate the solvent by removing CO2 at high temperature. The CO2 is then liquefied for transportation and storage in underground geological formations. Carbon capture and sequestration (CCS) is a highly effective and promising technology for reducing CO2 emissions from large point sources.

According to the International Energy Agency, CCS is one of the most important technologies for reducing CO2 emissions to the level required to limit global temperature increases to two degrees Celsius.

Hong Kong has been exploring the feasibility of implementing CCS technology since 2008. However, the implementation of CCS in Hong Kong would face several challenges.

Hong Kong has a high population density and limited land availability, making it difficult to find suitable sites for CO2 storage. The technology is also expensive, and the city lacks government incentives to encourage companies to adopt CCS.

Finally, Hong Kong is highly dependent on imported electricity, and CCS may increase the cost of electricity to an extent that it may not be feasible for the city.

Therefore, while post-combustion carbon capture and sequestration method is technically feasible in Hong Kong, the economic and social feasibility of this technology in the city remains uncertain.

To know more about Amines, visit:

https://brainly.com/question/31391643

#SPJ11

The given integral is ∫e^x dx

To evaluate the integral ∫e^x dx, we can use the rule of integration for exponential functions. The integral of e^x is simply e^x itself.

Step 1: Substitute u = e^x, which implies dx = du/(e^x).

The integral becomes ∫(e^x) dx = ∫u du/(e^x).

Step 2: Simplify the expression.

Since dx = du/(e^x), we substitute dx with du/(e^x) in the integral:

∫u du/(e^x) = ∫(u/e^x) du.

Step 3: Evaluate the integral.

The integral ∫(u/e^x) du can be computed as a standard power rule integral:

∫(u/e^x) du = (1/e^x) ∫u du = (1/e^x) (u^2/2) + C.

Step 4: Convert back to the original variable.

To obtain the final answer in terms of x, we substitute u = e^x back into the expression:

(1/e^x) (u^2/2) + C = (1/e^x) (e^(2x)/2) + C.

Simplifying further:

(1/e^x) (e^(2x)/2) + C = (1/2) e^x + C.

Therefore, the solution to the integral ∫e^x dx is (1/2) e^x + C, where C represents the constant of integration.

Learn more about integral: brainly.com/question/30094386

#SPJ11

The given integral is ∫e^x dx .To evaluate the integral ∫e^x dx, we can use the rule of integration for exponential functions. The integral of e^x is simply e^x itself.

Step 1: Substitute u = e^x, which implies dx = du/(e^x).

The integral becomes ∫(e^x) dx = ∫u du/(e^x).

Step 2: Simplify the expression.

Since dx = du/(e^x), we substitute dx with du/(e^x) in the integral:

∫u du/(e^x) = ∫(u/e^x) du.

Step 3: Evaluate the integral.

The integral ∫(u/e^x) du can be computed as a standard power rule integral:

∫(u/e^x) du = (1/e^x) ∫u du = (1/e^x) (u^2/2) + C.

Step 4: Convert back to the original variable.

To obtain the final answer in terms of x, we substitute u = e^x back into the expression:

(1/e^x) (u^2/2) + C = (1/e^x) (e^(2x)/2) + C.

Simplifying further:

(1/e^x) (e^(2x)/2) + C = (1/2) e^x + C.

Therefore, the solution to the integral ∫e^x dx is (1/2) e^x + C, where C represents the constant of integration.

Learn more about integral: brainly.com/question/30094386

#SPJ11

The integral ∫f(ax + b) dz can be evaluated as F((ax + b)/a) + C, where C is the constant of integration.

To evaluate the integral, we can use the substitution method. Let u = ax + b, then du/dz = a, and dz = du/a. Substituting these values into the integral, we have: ∫f(ax + b) dz = ∫f(u) (du/a)

Now we can replace the variable of integration with u and divide by a: = (1/a) ∫f(u) du

Since f(x) dx = F(x), we can rewrite the integral as: = (1/a) F(u) + C

Substituting back u = ax + b: = (1/a) F(ax + b) + C

Therefore, the evaluated integral is F((ax + b)/a) + C.

To learn more about integration  click here

brainly.com/question/31744185

#SPJ11

For 6 stores, the total number of roads would be 42 which is greater than 39. The total number of roads on Rohan's map is not possible to be 39.

Let's prove it:Let the number of stores be n. Then the total number of roads would be n*7.

If the total number of roads were 39, thenn*7=39;

hence n=39/7 = 5.57 which is not an integer. But the number of stores has to be a whole number; hence there can not be exactly 5.57 stores.

Let's take an example: if we have 5 stores, then the total number of roads would be 5*7=35 which is less than 39. Hence we need to have at least 6 stores to have 39 roads.

However, for 6 stores, the total number of roads would be 6*7=42 which is greater than 39.

Therefore, it is not possible to have 39 roads on Rohan's map.

To know more about integer visit:

https://brainly.com/question/33503847

#SPJ11

The formula for iron(II) nitrate is Fe(NO₂)₂. The formula for iron(II) nitrate is determined by using the valency of iron and nitrate.

Here, iron has a valency of 2. On the other hand, nitrate (NO2-) has a valency of 1. Fe(NO2)2 is used to represent iron(II) nitrate.

It has two nitrate ions, each with a negative charge, and one iron ion with a positive charge.

Therefore, Fe(NO₂)₂ represents iron(II) nitrate.

To know more about iron(II) nitrate visit :

brainly.com/question/31428625

#SPJ11

The magnitude of the force required to accelerate the object is 70,000 kN.

In this problem, it is known that a UAP (unidentified aerial phenomena) was spotted with an acceleration vector of [tex]a = 20i +30j - 60k[/tex] in [tex]m/s^2[/tex] and the estimated mass was 1000 kg.

We need to determine the magnitude of the force required to accelerate the object in kN.

Magnitude of force (F) can be calculated by the following formula:

F = ma

Where, m = mass of the object

a = acceleration of the object

So, [tex]F = ma = 1000\  kg \times 20i +30j - 60k m/s^2[/tex]

Now, we will calculate the magnitude of force.

So, [tex]|F| = \sqrt {F^2} = \sqrt{(1000 kg)^2(20i +30j} - 60k m/s^2)^2\\|F| = 1000 \times \sqrt{(400 + 900 + 3600)} kN\\|F| = 1000 \times \sqrt {4900} kN\\|F| = 1000\times 70 kN\\|F| = 70,000 kN[/tex]

Therefore, the magnitude of the force required to accelerate the object is 70,000 kN.

To know more about acceleration, visit:

https://brainly.com/question/2303856

#SPJ11