All categories

2 years ago

If the length of rectangle is x + 4 and the width is 3x - 5 what is the perimeter?

Mathematics

2 answers:

statuscvo [17]2 years ago

6 0

Answer:

8x-2

Step-by-step explanation:

l = x+4

w = 3x-5

The perimeter is

P =2(l+w)

= 2(x+4+3x-5)

Combine like terms

= 2(4x-1)

Distribute

= 8x-2

Nostrana [21]2 years ago

3 0

Answer:

$8x-2$

Step-by-step explanation:

The perimeter of a rectangle is 2L + 2W, where L represents the length and W represents the width. In this scenario, L is equal to x + 4 and W is equal to 3x - 5. We can setup an equation:

$2(x+4)+2(3x-5)$

We can then multiply x - 4 by 2 to get $2x+8$

We can then multiply 3x - 5 by 2 to get $6x-10$

Adding them together, we get the answer as $8x-2$

You might be interested in

Need help pls<br>thank you in advance

ira [324]

Answer:

<u />

$\textsf{Mean}\:\overline{X}=\sf \dfrac{\textsf{sum of all the data values}}{\textsf{total number of data values}}$

$\implies \sf Mean\:(Nilo)=\dfrac{5+6+14+15}{4}=\dfrac{40}{4}=10$

$\implies \sf Mean\:(Lisa)=\dfrac{8+9+11+12}{4}=\dfrac{40}{4}=10$

<h3><u>Standard Deviation</u></h3>

$\displaystyle \textsf{Standard Deviation }s=\sqrt{\dfrac{\sum X^2-\dfrac{(\sum X)^2}{n}}{n-1}}$

$\begin{aligned}\displaystyle \textsf{Standard Deviation (Nilo)} & =\sqrt{\dfrac{(5^2+6^2+14^2+15^2)-\dfrac{(5+6+14+15)^2}{4}}{4-1}}\\\\& = \sqrt{\dfrac{482-\dfrac{40^2}{4}}{3}}\\\\& = \sqrt{\dfrac{82}{3}}\\\\& = 5.23\end{aligned}$

$\begin{aligned}\displaystyle \textsf{Standard Deviation (Lisa)} & =\sqrt{\dfrac{(8^2+9^2+11^2+12^2)-\dfrac{(8+9+11+12)^2}{4}}{4-1}}\\\\& = \sqrt{\dfrac{410-\dfrac{40^2}{4}}{3}}\\\\& = \sqrt{\dfrac{10}{3}}\\\\& = 1.83\end{aligned}$

<h3><u>Summary</u></h3>

Nilo has a mean score of 10 and a standard deviation of 5.23.

Lisa has a mean score of 10 and a standard deviation of 1.83.

The <u>mean</u> scores are the <u>same</u>.

Nilo's standard deviation is higher than Lisa's. Therefore, Nilo's test scores are more <u>spread out</u> that Lisa's, which means Lisa's test scores are more <u>consistent</u>.

5 0

1 year ago

6^2 times 3/2 dived by 71/54 plz actually help<br><br> anyone got pad let

algol [13]

Answer:

41.0704225352 or 284x/9 + 0

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

Which of the following describes bias that may arise from the results?

velikii [3]

Answer: I think A
Epian:

8 0

2 years ago

mr. morris has a class of 14 students. he can spend $24 on each student to buy math supplies for the year. he first buys all the

Natali [406]

Hello!

First of all let's divide and find how much each calculator cost.

95.2/14=$6.80

Now we will subtract from 24.

24-6.8= 17.2

Mr. Morris has $17.2 left to spend on each student.

I hope this helps!

4 0

2 years ago

Read 2 more answers

In Heavenly Hash ice cream, the ratio of cashews to marshmallows to chocolate ice cream is 1:3:36 by volume.

tamaranim1 [39]

Answer:

90%

Step-by-step explanation:

36/40 = 90%

7 0

2 years ago

Read 2 more answers