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Vedmedyk [2.9K]

3 years ago

13

How do you do this question

1 answer:

Pie3 years ago

4 0

Answer:

72 inches

Step-by-step explanation:

The area formula is ...

A = LW . . . . . . the product of length and width

The perimeter formula is ...

P = 2(L+W)

You are given the width and the area, so L can be found as ...

128 = L×4

32 = L

Using this in the perimeter formula gives ...

P = 2(32 +4) = 2(36) = 72

The perimeter is 72 inches.

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Joe used a coupon that allowed him to stay five nights at the pleasant dreams hotel for a total of $410. If he had not used the

postnew [5]

Answer:

$92

Step-by-step explanation:

First, you need to divide the expense between the 5 nights. So 410/5=82. This is still with the coupon though. You need to add 10. When you do, you get $92/night. So, for five nights without the coupon, he would have spent $460 for the entire trip. Hope this Helps!

7 0

3 years ago

Read 2 more answers

Use the distributive property (expand) to write an equivalent expression for: 3(4x-2t). Type your answer ( I NEED THIS RIGHT AWA

Eddi Din [679]

Answer:

The distributive property here is to just multiply each value by tree number outside the parenthesis.

3 ( 4x - 2t)

12x - 6t

That would be your answer.

5 0

2 years ago

What is the equation of the line best fit for the following data? Round the slope and y-intercept of the line to three decimal p

kari74 [83]

Answer:

$y=1.383x-1.526$

Step-by-step explanation:

The given data table is

x : 4 7 10 12 13

y : 5 7 12 14 18

We need to find the equation of the best fit line.

The general form of a best fit line is

$y=mx+b$ .... (1)

where, m is slope and b is y-intercept.

$m=\frac{\sum_{i=1}^nx_iy_i-n\overline{x}\overline{y}}{\sum_{i=1}^nx_i^2-n\overline{x}^2}$

$b=\overline{y}-b\overline{x}$

Using the graphing calculator we get

$m=1.38321\approx 1.383$

$b=-1.52555\approx -1.526$

Substitute m=1.383 and b=-1.526 in equation (1).

$y=1.383x-1.526$

Therefore, the equation of best fit line is $y=1.383x-1.526$ .

4 0

4 years ago

Read 2 more answers

A random survey asked two groups of 100 women whether they wear shorts long pants or a dress most often the results are shown in

rodikova [14]

Answer:

I chose Pants, hope this helps and sorry if it didn’t

6 0

3 years ago

HELP ME PLEASE!!

LUCKY_DIMON [66]

Using a system of equation, we have that:

a)

x, which is the cost of on-site service.
y, which is the cost of at-store service.
z, which is the cost of by-mail service.

b)

The system is:

$x = 3y$

$z = y - 10$

$15x + 40y + 5z = 3100$

c)

The cost of one on-site repair service is of $90.

Item a:

The variables are:

x, which is the cost of on-site service.
y, which is the cost of at-store service.
z, which is the cost of by-mail service.

Item b:

On-site service costs <u>3 times as much as at-store service</u>, thus:

$x = 3y$

By mail service costs <u>$10 less than at-store</u> service, thus:

$z = y - 10$

Last week, the shop completed <u>15 services on-site, 40 services at-store, and 5 services by mail for total sales of $3100</u>, thus:

$15x + 40y + 5z = 3100$

The system is:

$x = 3y$

$z = y - 10$

$15x + 40y + 5z = 3100$

Item c:

The cost of one on-site repair service is x.
First, replacing the first two equations into the third, we find y, and then with it we find x.

$15x + 40y + 5z = 3100$

$15(4y) + 40y + 5(y - 10) = 3100$

$60y + 40y + 5y = 3150$

$105y = 3150$

$y = \frac{3150}{105}$

$y = 30$

Then

$x = 3y = 3(30) = 90$

The cost of one on-site repair service is of $90.

A similar problem is given at brainly.com/question/24823220

3 0

3 years ago