Evaluate c−a+bd if a=7/8 , b=−7/16 , c=0.8 , and d=1/4

You walked 16 blocks in a time of 28 minutes. At this rate you walk 1 block in 1 minute 75 seconds.

In Science, distance can be defined as the amount of ground that is covered (travelled) by a physical object over a particular period of time and speed, irrespective of its direction, starting point or ending point.

Mathematically, the distance traveled by a physical object (body) can be calculated by using this formula:

Distance = speed (rate) × time

Note: Let the variable x represent the halfway distance.

Since it takes the same amount of time to walk each block and halfway there, half of the berries are gone. Therefore, we have the following:

At point x, the number of strawberries that is left is equal to 12 strawberries while the distance after walking 3 more blocks, you still have 5 blocks to go would be given by:

1/2 × x = (3 + 5) = 8

1/2 × x = 8

Distance, x = 8 × 2

Distance, x = 16 blocks.

Now, we can determine the rate at which this person walks a block:

Rate (speed) = 28/16

Rate (speed) = 1.75 minutes.

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The area of each of the patios is 1600 m².

The mason builds two patios with the same area. One of the patios is square, and the other is rectangular. The rectangular patio is 10 m longer but 8 m less wide than the square patio. We need to find the area of each patio.

Let the side length of the square patio be denoted by the variable "x". The area of the square can be calculated as follows.

A1 = x²

The length and breadth of the rectangular patio is "x + 10" and "x - 8", respectively. The area of the rectangular patio is calculated below.

A2 = (x + 10)*(x - 8)

A2 = x² + 2x - 80

We know that the areas of both patios are equal.

A1 = A2

x² = x² + 2x - 80

2x = 80

x = 40

Hence, the area of each patio is A = x² = 40² = 1600 m².

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For the given condition the x distribution is normal. Option B is correct.

It is defined as the measure of data disbursement, It gives an idea about how much is the data spread out.

[tex]\rm \sigma = \sqrt{\dfrac{ \sum (x_i-X)}{n}[/tex]

σ is the standard deviation

xi is each value from the data set

X is the mean of the data set

n is the number of observations in the data set.

n=64

√n=8

μ=8

σ=16

The sample size (n > 30) is enough. Using the Central Limit Theorem

¯X∼N(8,16²/64)

The formulas below give the mean and standard deviation of the mean value of x:

The sampling distribution of x has a mean value of 8.

The following equation gives the sampling distribution's standard deviation:

=σ/√n

=16/√64

=16/8

=2

The sample distribution's standard deviation is 2.

Yes, this distribution can be regarded as normal as it roughly follows the normal distribution (By using CLT)

Thus, for the given condition the x distribution is normal. Option B is correct.

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The correct statement regarding the message in the graph title is of:

a. No, the three candidates were only separated by a margin of about 2%.

The bar graph shows the number of votes obtained by each candidate, which are listed as follows:

These amounts of votes where quite close, however the bar graph has a bad scale, giving the idea that Roberts got about the double number of votes as Johnson and four times as Gomez.

This bad scale is also used to insert the word wide into the text of the article. However, due to the low absolute difference  in the number of votes between these candidates, this work is not correct, and hence, option a is correct.

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The vertices of the transformed image D'E'F'G' is D'(0, 4) E' (4, 3) G'(-2, -4) F'(2, -5)

Rectangle DEFG with vertices D(-4, 3), E(0, 2),and G(-6, -5), F(-2,-6),

is transformed into an image as per  (x,y) → (x + 4, y + 1 )

D(-4, 3)

x = -4, y = 3

The image D' will be (x + 4, y + 1) = (-4 + 4, 3 + 1 ) = (0, 4)

E(0, 2)

x = 0, y = 2

The image E' will be (x + 4, y + 1) = (0 + 4, 2 + 1 ) = (4, 3)

G(-6, -5)

x = -6, y = -5

The image G' will be (x + 4, y + 1) = (-6 + 4, -5 + 1 ) = (-2, -4)

F(-2, -6)

x = -2, y = -6

The image F' will be (x + 4, y + 1) = (-2 + 4, -6 + 1 ) = (2, -5)

Therefore, the vertices of the transformed image D'E'F'G' is D'(0, 4) E' (4, 3) G'(-2, -4) F'(2, -5)

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Answer: ( 4 , 8 )

Step-by-step explanation:

3x - 2y = -4

y = 2x

Substitute the second equation into the first

3x - 2(2x) = -4
3x - 4x = -4
-1x = -4
x = 4

y = 2(4)
y=8

( 4 , 8 )

Answer:

FALSE

Step-by-step explanation:

3.6ft is 43.2

3ft 6in is 42 in

The price of 72 rolls of toilet rolls in each shop is:

The shop with the best value for money is Lidal.

Lidal sells 8 toilet rolls for $2.80 and so if it was to sell 72 rolls, it would sell at a price of:

= Price per 8 rolls x Number of rolls / Number of rolls in packages

= 2.80 x 72 / 8

= 2. 80 x 9

= $25.20

Oldi sells 9 toilet rolls for $3.24 so the cost of 72 rolls would be:

= 3. 24 x 72 / 9

= 3. 24 x 8

= $25. 92

The shop with the best value for money is the cheaper one which is Lidal.

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Answer:

3n+6 May i pls have the crown

Step-by-step explanation:

If you use the PEMDAS rule

3 * n= 3n

and 3*2= 6

Answer:

0.96 inches

Step-by-step explanation:

The first step is to find the diameter given the circumference. This is the formula for circumference:

[tex]C=\pi d[/tex]

In terms of d, the formula looks like this:

[tex]d=\frac{C}{\pi}[/tex]

For the softball, the diameter is approximately:

[tex]d=\frac{12}{\pi} =3.82[/tex]

For the baseball:

[tex]d=\frac{9}{\pi } =2.86[/tex]

Find the difference:

[tex]3.82-2.86=0.96[/tex]

The approximate difference in diameters is 0.96 inches!

Answer: 0.96 inches

Step-by-step explanation:

Answer: 224/155

Step-by-step explanation:

Answer:

Step-by-step explanation:

1. Convert proper Fractions to improper fractions!

-6 2/5/ -4 3/7=

=-32/5/-31/7

2. Multiply by switching Denominator and Numerator of the Fraction!

-32/5/-31/7=

-32/5*-7/31=

224/155=

1 69/155

3. Answer:1 69/155

The equation of line is y = -1/4x + 11/12.

A line's slope is determined by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the y and x coordinates, respectively. Therefore, it is possible to write the

change in y coordinate with respect to the change in x coordinate as,

m = Δy/Δx

where, m is the slope

Given:

line passing through P(-1, 3) that is perpendicular to y = 4x - 7.

Now, the slope of perpendicular line is

slope= -1/ 4

and, the lines passes through (-1, 3)

Thus, using slope- intercept form

y- 3 = m( x + 1)

y- 3 = -1/4 ( x+ 1)

y- 3 = -1/4x - 1/4

y = -1/4x + 11/12

Hence, the equation of line is y = -1/4x + 11/12

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Answer: Brittany can buy 10 fish

Step-by-step explanation:

If you divide 15 by 1.50 you get 10 meaning Britanny can buy 10 fish. Apologies if this is incorrect.

Dan's sales for the next month if he wants his monthly average for the year to be 25,000 is 36430.

Since for the first 11 months of this year , Dan's sales averaged 24,870 a month. The total amount will be:

= 11 × 24870

= 273570

Since Dan's sales for the next month if he wants his monthly average for the year to be 25,000, the amount will be:

= 12 × 25000

= 300000

Therefore, the amount for the next month will be:

= 300000 - 273570

= 26430

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Answer:

lo siento soy muy malo para las matemáticas y además soy nuevo en este aplicación

The volume of the prism with area 41 cm^2 and height 11 cm is 451 cm^3

Volume refers to three dimensional solid. The three dimensions include some elements which are

While area is 2 dimensional which is solved by length * width

In the figure the area is already solved to be 41 cm^2 and height is given to be 11 cm

The volume of the solid is given

= length * width * height

= area * height

= 41 * 11

= 451 cm^3

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Answer: 3p-q-2

Step-by-step explanation:

Perimeter is the sum of all the sides.

Add the known sides together:

(p-3) + (2p+3q) = 3p + 3q - 3

To find the unknown side, subtract the sum of the 2 known sides from the perimeter (combine like terms):

(6p+2q-5) - (3p+3q-3) = 3p-q-2

Add all 3 sides together as a check of your answer!

The insurance cost now is £449.204.

Given:

Brian pays £465. 98 a year on his car insurance. The insurance company reduces the price by 3. 6%.

Insurance  = 465.98*3.6%

= 465.98*3.6/100

= 465.98*36/10*100

= 46598/100 * 36/1000

= 46598*36 / 100000

= 1677528/100000

= 16.77528

Insurance cost now = 465.98 - 16.77528

= £449.20472

Therefore the insurance cost now is £449.204.

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a) The revenues for both items will be the same after 1 day.

b) The graph with the solution is given by the image at the end of the answer.

The functions defining the revenues for the selling of x brownies and of x cookies are presented as follows:

The revenues will be the same after x days, for which:

B(x) = C(x).

Hence:

2x² + 8x - 4 = 2x + 4

2x² + 6x - 8 = 0.

x² + 3x - 4 = 0.

The quadratic function can be factored as follows:

(x + 4)(x - 1) = 0.

Applying the Factor Theorem, the solutions are given as follows:

The graph shows the intersection of the two curves, B(x) and C(x).

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Answer:f^-1(x)= square root x-1 over 4 and square root -square root over 4

Step-by-step explanation:

interchange the variables and solve for y

Convergent Series:

A Convergent Series is a series whose partial sums tend to a specific member is called a limit.

  ∑ 1/2n = 1/2+ 1/4 + 1/8 + 1/16 +........

Given an infinite series ∑₁ ∞ an determine the series is convergence. Recall that we can actually do better with geometric series not only we can determine convergence but also divergence. We can also calculate geometric series.

Suppose we are given a series ∑ aₙ which is not quite a geometric series but becomes a geometric series for sufficiently large n. That is we can find an integer N such that aₙ = aₓⁿ for all n > N. we don't have a general formula for aₙ when n ≤ N. The values of aₙ for small n don't effect Sₙ is convergence or not.

As a moment of fact, we never used the fact that aₙ eventually become geometric. More general ∑aₙ is convergent series, we can add a finite number of terms to the be gaining of this series or remove a finite number of terms from the be gaining of the series without affecting the convergence  of the series. For Example: if ∑aₙ convergence then so does

                        10 + 10¹⁰ + 10 ¹⁰⁰ + 10¹⁰⁰⁰ + ∑aₙ

Similarly, if ∑aₙ convergence then,

                a₁₀₀₀ +a₁₀₀₁ +a₁₀₀₂ + ..... = ∑₁₀₀₀ ∞ aₙ

However, the fact that we are only adding finitely many terms to the series is essential. That is, when it comes to determining convergence of a series ∑aₙ , we can see that only the asymptotic  behavior of ∑aₙ matter, that is, only the behavior of the sequence aₙ as n--- ∞ affects convergence.

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the question was already answered but here you go

Based on the rate the number of songs being downloaded is decreasing, in 2030, the number of songs downloaded will be 7,792 songs.

The number of songs downloaded in 2010 is 18,000.

To find the number of downloads in 2030, use the formula:

= Songs in 2010 x ( 1 - Rate of decrease) ^ number of years

Number of years = 2030 - 2010 = 20 years

= 18,000 x (1 - 4.1%)²⁰

= 7,791.92

= 7,792 songs

In conclusion, 7,792 songs will be downloaded in 2030.

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The lengths of the major and minor axis are 4√6 and 4√3.

A point on a curve is described by an ellipse if its location is such that the sum of the distances between its two focal points is a constant.

(x−h)²/ b² +(y- k)² /a² = 1

Given:

(x−3)²/ 27+(y+4)² /45=1

The above equation can be compared to the standard equation of an ellipse

(x−h)²/ b² +(y- k)² /a² = 1

where, (h, k) = coordinates of the center of the ellipse

a =  length of the semi major axis

b = length of the semi minor axis

By comparison, we have;

(h, k) = (3, -4)

a = √(24) = 2 x√6

b = √(12) = 2 x√3

and, length of the major axis = 2a

length of the minor axis = 2b

Thus, The length of the major axis is

2x a = 2 × 2 x √6 = 4√6

and, length of the minor axis is

2•b = 2 × 2√3 = 4√3

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Answer: 6sqrt(5) and 6sqrt(3)

Step-by-step explanation:

I took the test and these were the correct answers.

"If we assume that 57% of Americans says that GM foods are generally unsafe to eat, then there is an 8.8% chance that random sample results will show 60%or more who says that GM foods are generally unsafe to eat" is valid interpretations of this p-valid.

Given info;

Genetically modified foods: A 2016 Pew Research survey found that 56% of Americans believe that eating genetically modified (GM) food is generally harmful. This month, a survey of 500 randomly chosen American citizens found that 60% believe gm foods are typically dangerous to consume. We examine the possibility that more people than 56% believe that eating GM food is generally unsafe this year. 0.084 is the p-value.

If we assume that 57% of Americans say that GM foods are generally unsafe to eat, then there is an 8.8% chance that random sample results will show 60% or more who say that GM foods are generally unsafe to eat” is a good interpretation of the P-value. The P-value is the probability that results will be as or more extreme than those from the latest survey if opinions have not changed since 2014.

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Answer:

answer -a dilation followed by a translation

-a dilation followed by a reflection

-a reflection followed by a dilation

-a rotation followed by a dilation

The multiple of 2 and 4 is 48.

A number that is the result of a given number and another natural number is called a multiple of that number. To find the multiple of a number, multiply the number by any whole number.

The given options are A. 50,  B. 58,  C. 54, and D.48.

The multiples of 50 can be written as,

[tex]50=2\times5\times5[/tex]

The multiples of 58 can be written as,

[tex]58=2\times29[/tex]

The multiples of 54 can be written as,

[tex]54=2\times3\times3\times3[/tex]

Therefore, the first three options are not multiples of both 2 and 4.

The multiples of 48 can be written as,

[tex]\begin{aligned}48&=2\times2\times2\times2\times3\\&=4\times2\times2\times3\end{aligned}[/tex]

Therefore, 48 is a multiple of 2 and 4.

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The complete question is -

Which of the following is a multiple of 2 and 4?

A. 50 B. 58 C. 54 D.48

..........................................

[tex]\displaystyle\\Answer: \frac{-11-12i}{15}[/tex]

Step-by-step explanation:

[tex]\displaystyle\\\frac{-7+2i}{3-6i}=\\\\\frac{(-7+2i)(3+6i)}{(3-6i)(3+6i)}=\\\\ \frac{-21-42i+6i+12i^2}{3^2-(6i)^2} =\\\\\frac{-21-36i-12}{9+36}=\\\\\frac{-33-36i}{45} =\\\\\frac{3(-11-12i)}{3(15)} =\\\\\frac{-11-12i}{15}[/tex]

For the given equation the solution would be

                          [tex]r=-7t-3,\:s=\frac{-6t-7}{3}[/tex]

What is the system of linear equations in three variables?

Three-variable equation systems are only slightly more difficult to solve than two-variable equation systems. Substitution and the use of 3x3 matrices are the two most straightforward methods for solving these types of equations.

The given equations are

                  r - 3s + t = 4 ------------(I)

                  3r - 6s +9t = 5 ---------(II)

                  4r - 9s + 10t = 9--------(III)

from equation (I), we get

                  r = 4 + 3s - t ------------(IV)

Now put the value of 'r' in equations (II) and (III), and we get

               3(4 + 3s - t) - 6s + 9t = 5

               4(4 + 3s - t) - 9s + 10t = 9

Solving the above equations, we get

             3s + 6t + 12 = 5 --------(V)

             3s + 6t + 16 = 9 --------(VI)

 Now isolate the value of 's' from equation (IV), we get

              3s = - 6t + 5 -12

             [tex]s=\frac{-6t-7}{3}[/tex]

Now put the value of 's' in equation (IV), and we get

           [tex]r=4 +3s -t\\r=4+3\cdot(\frac{-6t-7}{3}) -t\\ r=4-6t-7-t\\r=-7t-3[/tex]

Hence, For the given equation the solution would be

                   [tex]r=-7t-3,\:s=\frac{-6t-7}{3}[/tex]

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