Evaluate the function graphically.
Find f(-1)

Step-by-step explanation:

what is the. meaning of this

Answer:

83 degrees

Step-by-step explanation:

17^2 = 8^2 + 16^2 - 2 * 8 * 16 * cos (X)

289 = 64 + 256 - 16 * 16 * cos(X)

289 = 320 - 256 cos(X)

289-320 = -256 cos(X)

- 31 = -256 cos(X)

31 = 256 cos(X)

31/256 = 256/256 cos(X)

0.121094 = cos (X)

x = arccos 0.121094

x = 83.04475538

Answer:

The answer to your question is,

B) It isn’t true that corresponding cross-sections have the same area.

Step-by-step explanation:

They have the same areas and the same heights. but the corresponding cross-section is not the same

{The top of the first figure is a point, but the second one is a flat}

I hope this helps :)

Answer:

B)  It isn’t true that corresponding cross-sections have the same area.

Step-by-step explanation:

Cavalieri's principle

If two three-dimensional figures have the same height and the same cross-sectional area at every point along that height, they have the same volume.

From inspection of the given diagram:

The cross-sectional area at every point along the height is not the same in both figures.

Answer: 68

Step-by-step explanation:

Angles in a triangle add to [tex]180^{\circ}[/tex], meaning that [tex]m\angle TRS +m\angle TSR=136^{\circ}[/tex].

Furthermore, since [tex]\triangle TSR[/tex] is isosceles, [tex]m\angle TRS=m\angle TSR[/tex].

Therefore, [tex]m\angle TSR=68^{\circ}[/tex].

Answer:

f(3) = 10

Step-by-step explanation:

f (x) = x +7

plug in 3

f (3) = 3 + 7

add

f(3) = 10

The new 2 × 2 system of equation is

2y – 3z = 12

–3y – 8z = 7

What are linear equations ?

If a, b, c and r are real numbers (and if a, b, and c are not all equal to 0) then ax + by + cz = r is called a linear equation in three variables. (The “three variables” are the x, the y, and the z.) The numbers a, b, and c are called the coefficients of the equation.

How do you solve linear equations with 3 variables?

Pick any two pairs of equations from the system. Eliminate the same variable from each pair using the Addition/Subtraction method. Solve the system of the two new equations using the Addition/Subtraction method.

Given Equations:

x-y-2z=4 ............(1)

-x+3y-z=8 ..........(2)

-2x-y-4z=-1 ........(3)

Given Condition 1: use equation (1) with equation (2) to eliminate x

According to the condition,

x-y-2z=4 ........(1)

-x+3y-z=8 ......(2)

On adding (1) and (2), we get

(1-1)x +(-1+3)y +(-1-2)z = 4+8

2y - 3z = 12

Given Condition 2: use equation (1) with equation (3) to eliminate x

x-y-2z=4 .......(1)

-2x-y-4z=-1 ..(3)

on multiplying (1) both the sides with 2 , we get

2x - 2y -4z = 8

On adding with (3), we get

2x - 2y -2z = 8

-2x-y-4z=-1

-3y - 8z = 7

Thus, The new 2 × 2 system of equation is

2y – 3z = 12

–3y – 8z = 7

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The amount of money left on the gift card, in term of the number of cups, a Lauren has bought is represented by the equation would be A = 10 - 2a.

What is an equation?

An equation is an expression that shows the relationship between two or more numbers and variables.

We are given that from the task content that the total amount of money Lauren has initially is $10.

Hence, each cup of coffee costs $2.

Since the amount of money Lauren has left each time,

That is related to the number of coffee cups bought by the equation;

A = 10 -2a.

where a ranges be between 0 and 5.

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Answer:

increase of 100%

Step-by-step explanation:

50 cents to 1 dollar is an increase.

The percent increase can be calculated by dividing the increased amount by the original amount.

$1.00 - $0.50 = $0.50 increase

% increase = 100%

Answer:

A. 20

Step-by-step explanation:

300 ÷ 2.5= 120

So

50÷2.5 = 20

On solving the provided question, we got to know that -  the points (0,1) and (1,0) to be used to plot the graph .

An algebraic equation of the form y=mx+b (where m is the slope and b is the y-intercept) with one constant and only one first-order (linear) term is called a linear equation. The above is sometimes called a "linear equation in two variables" where x and y are variables.

To draw a straight line, just two points are needed.

Finding the points where the graph intersects is one approach.

[tex]the intercepts of the x and y axes[/tex]

[tex]Let x = 0 in the y-intercept equation.\\ Let y = 0 in the x-intercept equation.[/tex]

x =0→y=0+y=1⇒y=1←y-intercept

y =0→x+0=1⇒x=1←x-intercept

plot the points (0,1) and (1,0)

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The measure of PQ in the given triangle is 24.

What is triangle?

PQ = ST

7x-2 = -2x+32

7x + 2x = 32 + 2

9x = 34

x = 34/9

The measure of PQ:

PQ = 7x-2

= 7(34/9) - 2

= (238 - 18) / 9

= 24.4

PQ ≅ 24

Hence, the measure of PQ in the given triangle is 24.

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Answer:

C. 38 = x + 23

Step-by-step explanation:

X represents the amount she still needs to bake for the party.

38 represents the total amount of cookies she needs to bake.

Because she already made 23 cookies, you add to X

Answer:

Step-by-step explanation:

3 small tiers + 5 medium tiers= 291 guests

1 small tier+5 medium tiers=247 guests

The 2 cakes have the same medium tiers(5 medium tiers). If we subtract  291-247 we will have the number of guest that  2 small tiers serve.

291-247= 44 guests serve per 2 small tiers

44:2=22 guests serve per one small tier.

So if we subtrack the number of guest that one small tier one the cake that has only one small tier we will obtain the number of guests that the 5 medium tiers serve.

247-22=225 guests serve per 5 medium tiers

225:5= 45 guests per 1 mediem tier.

Sorry, because english isn't my mother tongue.

Answer:

18.2

Step-by-step explanation:

20 + (n-1)-.2

n is the number of the term.

-.2 is the common difference

20 + (10-1) -.2

20 + 9(-.2)

20 - 1.8

18.2

The probability of the flights at the airlines at least 4 of the next 5 are overbooked from the given histogram is equal to 0.446.

Histogram is attached.

As given in the question,

Required histogram is attached.

From the attached histogram,

Histogram is attached.

The probability of 4 overbooked flights for the given airlines 'P (4) =  0.332

The probability of 4 overbooked flights for the given airlines 'P(5)' = 0.114

Required probability of at least 4 for the next 5 flights of the given airlines

= P ( x ≥ 4 ) upto next P(5)

= P(4) + P(5)

= 0.332 + 0.114

= 0.446

Therefore, the probability of at least 4 upto next 5 flights of the given airlines from the given histogram is equal to 0.446.

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An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

The value of x is 6.

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

4(x + 11/3) = 9(2/3)

Divide both sides by 4.

x + 11/3 = 29/3

Subtract 11/3 on both sides.

x = 29/3 - 11/3

x = (29 - 11) / 3

x = 18/3

x = 6

Thus,

The value of x is 6.

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The required answer for the given mathematical operation is 182.5

What are arithmetic operations?

A subject of mathematics known as arithmetic operations deals with the study and use of numbers in all other branches of mathematics. Basic operations including addition, subtraction, multiplication, and division are included.

Given, 67.4 + 43 + 30 + 42.10

        = 110.4 + 30 + 42.1

        = 140.4 + 42.1

        = 182.5

Hence, the required answer for the given mathematical operation is 182.5

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Answer:

Step-by-step explanation:

d. 0 to 4 seconds, None, 4 to 6 seconds.

Based on the data in the table, the speed of the car is increasing for the interval of time from 0 to 4 seconds. After 4 seconds, the speed remains constant at 23 mph for the remainder of the time period. Therefore, the speed is not decreasing at any point in the given time interval.

For diagram 5, X = 76° and from diagram 6 x = 80° in the given triangles

An isosceles triangle is a type of triangle that has any two sides equal in length. The two angles of an isosceles triangle, opposite to equal sides, are equal in measure. In geometry, triangle is a three-sided polygon that is classified into three categories based on its sides, such as:

Scalene triangle (All three sides are unequal)

Isosceles triangle (Only two sides are equal)

Equilateral triangle (All three sides are equal)

Find attachment to understand the explanation

∠A = ∠C ( base angles of an isosceles triangle)

∠A = x and ∠C = 76

Therefore ∠X = 76°

For diagram 6

interior ∠A + exterior ∠A = 180°

but exterior ∠A = 110°

interior ∠A = 180  - 110

interior ∠A = 70°

∠A = ∠C( base angles of isosceles ΔBAC) which is 70°

∠A + ∠B + ∠c = 180

∠B = 180 - 70 - 70

∠B = 40°

but ∠CBA + ∠CBD = 90 because ∠B = 90° and ∠CBA = 40°

∠∠CBD = 90 - 40

∠CBD = 50°

But ∠∠CBD = ∠BDC( base angles of isosceles Δ)

so that

∠BCD + ∠CBD + ∠BDC = 180°( angles in a triangle)

x + 50 + 50 = 180

x = 180 - 100

x = 80°

In conclusion the value of x in the first and second diagrams are 76° and 80° respectively

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The correct statements for the triangle are given as follows:

The vertices of the triangle are given as follows:

A(0,0), B(8,12), C(16,6).

The midpoints of each side are given by the mean of the coordinates at the extrema of these sides, hence:

The segment BE is a vertical segment, as the x-coordinate is fixed at x = 8, hence ti is parallel to the y-axis.

Given two points, the slope is given by the change in y divided by the change in x. Then the slope of CF is given as follows:

m = (6 - 6)/(16 - 4) = 0.

The length of the segment AD is given as follows:

Length of AD = square root(12² + 9²) = 15 units.

(formula for the distance between two points).

The centroid of a triangle is given by the mean of it's three coordinates, hence:

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Answer:

[tex]W=\frac{A}{L}[/tex]

Step-by-step explanation:

Divide both sides of the equation by [tex]L[/tex].

Based on a system of equations, the number of seats in the upper section of the racetrack is 3,600.

A system of equations or simultaneous equations is two or more equations concurrently or simultaneously solved.

There are four methods for solving simultaneous equations:

The charge per lower-section seat = $85

The cost per upper-section seat = $60

The fee per field ticket = $35

Let the number of lower-section seats = x

Let the number of upper-section seats = 3x

Let the number of field tickets = y

Equation 1: x + 3x + y = 22,800 or 4x + y = 22,800

85x + 60(3x) + 35y = 948,000

Equation 2: 85x + 180x + 35y = 948,000

From equation 1, y = 22,800 - 4x ...Equation 3

Substitute Equation 3 in Equation 2 to eliminate y:

85x + 180x + 35(22,800 - 4x) = 948,000

85x + 180x + 798,000 - 140x = 948,000

125x = 948,000 - 798,000

125x = 150,000

x = 1,200

The number of seats for each racetrack section:

Lower section seats, x = 1,200

Upper section, 3x = 3,600 (1,200 x 3)

Field tickets, y = 22,800 - 4x

y = 22,800 - 4(1,200)

= 18,000

Check:

85x + 180x + 35y = 948,000

85(1,200) + 180(1,200) + 35(18,000) = 948,000

102,000 + 216,000 + 630,000 = 948,000

948,000 = 948,000

Total revenue:

Lower section seats = $102,000 (85 x 1,200)

Upper section seats = $216,000 (60 x 3 x 1,200)

Field tickets = $630,000 (35 x 18,000)

Total revenue = $948,000

Thus, based on simultaneous equations, we can conclude that there are 3,600 seats in the upper section.

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Answer:

The answer is in the picture

Step-by-step explanation:

The explanation is in the picture

[tex]6\frac{5}{6}-4\frac{1}{3}[/tex] Showing my work using the mixed fraction the answer is [tex]=\frac{5}{2}[/tex]

What do you mean by mixed fraction?

A fraction represented by a quotient and a remainder is a mixed number

Fractions represent parts of a whole.

How can I convert an improper fraction to a mixed number?

Divide the numerator by the denominator.

Keep the denominators the same, take the quotient as an integer, and the remainder as the numerator of the correct fraction.

Given expression:

[tex]6\frac{5}{6}-4\frac{1}{3}[/tex]

⇒ [tex]\frac{41}{6}-\frac{13}{3}[/tex]

⇒ [tex]\frac{41-26}{6}[/tex]

= 15/6

= 5/2

Therefore, [tex]6\frac{5}{6}-4\frac{1}{3}=\frac{5}{2}[/tex]

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. Each lemon bar must be covered in decorative icing. A picture of the lemon bar is shown below.

Answer:

2sin²0 + 2sin0 - 1/2 = 0

(2sin0 + 1)(sin²0 - 1/2)= 0

2sin0 + 1 = 0 or sin²0 - 1/2 = 0

2sin0 = -1 or sin0 = ±1/√2

The value of y that satisfies the equation is 41.

What is the arithmetic operation?

Arithmetic operations involve the study of numbers, the operation of numbers that are useful in all the other branches of mathematics. It basically comprises operations such as Addition, Subtraction, Multiplication, and Division.

To solve this equation for y, you can divide both sides by 4:

4y/4 = 164/4

This simplifies to:

y = 41

Hence, the value of y that satisfies the equation is 41.

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Step 1: Figure out when Savannah will double her account value:

We need to solve [tex]140000 = 70000\left(1+\frac{0.01375}{4}\right)^{4t}[/tex].

Divide by 70000:

       [tex]2 = \left(1+\frac{0.01375}{4}\right)^{4t}[/tex]

Take the natural log of both sides and bring the exponent down:

      [tex]\ln(2) = 4t\cdot\ln\left(1+\frac{0.01375}{4}\right)[/tex]

Divide by that mess multiplied by t:

      [tex]\dfrac{\ln(2)}{4\ln\left(1+\frac{0.01375}{4}\right)} = t[/tex]

Throw that into a calculator and you get about 50.497297884.

Depending on how picky your teacher is, we'd need to round this to the next time the interest is compounded, since it's only compounded each quarter, so t = 50.5.  (The fact is that Savannah's account will never exactly double in value.)

Step 2:

Now, we need to evaluate Carter's continuously compounded investment for 50.5 years:

    [tex]B = 70000e^{0.01125\cdot(50.5)}\approx123546.825994[/tex]

    B ≈ 123547 to the nearest dollar.

As a comparison, here's the other calculation with the more precise t value.

    [tex]B = 70000e^{0.01125\cdot(50.497297884)}\approx123543.070375[/tex]

    B ≈ 123543 to the nearest dollar.

Again, I would say the 50.5 calculation is actually more correct, since Savannah's account only compounds the interest each quarter, but you'll have to decide what your teacher would say.

Answer:

$123,543 (nearest dollar)

Step-by-step explanation:

Find the length of time Savannah has to invest her money for it to double.

[tex]\boxed{\begin{minipage}{8.5 cm}\underline{Compound Interest Formula}\\\\$ A=P\left(1+\frac{r}{n}\right)^{nt}$\\\\where:\\\\ \phantom{ww}$\bullet$ $A =$ final amount \\ \phantom{ww}$\bullet$ $P =$ principal amount \\ \phantom{ww}$\bullet$ $r =$ interest rate (in decimal form) \\ \phantom{ww}$\bullet$ $n =$ number of times interest is applied per year \\ \phantom{ww}$\bullet$ $t =$ time (in years) \\ \end{minipage}}[/tex]

Given:

Substitute the given values into the formula and solve for t:

[tex]\implies 140000=70000\left(1+\dfrac{0.01375}{4}\right)^{4t}[/tex]

[tex]\implies 140000=70000\left(1.0034375\right)^{4t}[/tex]

[tex]\implies2=\left(1.0034375\right)^{4t}[/tex]

[tex]\implies \ln2=\ln\left(1.0034375\right)^{4t}[/tex]

[tex]\implies \ln2=4t\ln\left(1.0034375\right)[/tex]

[tex]\implies t=\dfrac{\ln 2}{4 \ln\left(1.0034375\right)}[/tex]

[tex]\implies t=50.49729788[/tex]

Therefore, it would take approximately 50.5 years for Savannah's principal investment to double.

[tex]\boxed{\begin{minipage}{8.5 cm}\underline{Continuous Compounding Formula}\\\\$ A=Pe^{rt}$\\\\where:\\\\ \phantom{ww}$\bullet$ $A =$ final amount \\ \phantom{ww}$\bullet$ $P =$ principal amount \\ \phantom{ww}$\bullet$ $e =$ Euler's number (constant) \\ \phantom{ww}$\bullet$ $r =$ annual interest rate (in decimal form) \\ \phantom{ww}$\bullet$ $t =$ time (in years) \\ \end{minipage}}[/tex]

Given:

Substitute the given values into the formula along with the found value of t and solve for A:

[tex]\implies A=70000e^{0.01125 \times 50.4972...}[/tex]

[tex]\implies A=123543.0704...[/tex]

Therefore, the amount of money that Carter would have in his account when Savannah's money has doubled in value is $123,543 (nearest dollar).