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2 years ago

10

The length of a rectangular rug is 4 less than twice its width. The perimeter of the rug is 40 feet. What is the area of the rug

?
1) 96 sq ft
2) 56 sq ft
3) 104 sq ft
4) 86 sq ft

1 answer:

disa [49]2 years ago

6 0

96 sq ft is the answer— here’s my work btw

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Could anyone help please?

julsineya [31]

Answer:

9.6 or round it to 10

Step-by-step explanation:

brainliest pls

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2 years ago

A group of statistics students decided to conduct a survey at their university to find the average (mean) amount of time student

Butoxors [25]

Answer: $(21.541,\ 23.059)$

Step-by-step explanation:

The confidence interval for population mean is given by :-

$\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

Given : Sample size : $n=240$ , which is a large sample , so we apply z-test .

Sample mean : $\overline{x}=22.3$

Standard deviation : $\sigma= 6$

Significance level : $\alpha=1-0.95=0.05$

Critical value : $z_{\alpha/2}=1.960$

Now, a confidence interval at the 95% level of confidence will be :-

$22.3\pm(1.960)\dfrac{6}{\sqrt{240}}\\\\\approx22.3\pm0.759\\\\=(22.3-0.759,\ 22.3+0.759)\\\\=(21.541,\ 23.059)$

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3 years ago

HELP! What is AB? WILL GIVE BRAINLIEST!

Natalija [7]

AB = BC

3x-4=5x-10
-4=2x-10
6=2x
3=x

AB = 3x-4
AB = 3 (3)-4
AB = 9-4
AB =5

Therefore, AB is 5.

BC = 5x-10
BC = 5(3)-10
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BC= 5

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3 years ago

When choosing a new class color, 90 students voted for crimson and 60 voted for royal blue. What percent of these students voted

neonofarm [45]

The percentage of students voted for colour crimson
=
$\frac{90}{60 + 90} \times 100\% \\ = \frac{90}{150} \times 100\%\\ = \frac{9}{15} \times 100\% \\ = 60\%$
hope it helps!

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2 years ago

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satela [25.4K]

Answer:

See below

Step-by-step explanation:

r/6 <-6 multiply both sides by 6 to get

<u>r < - 36 </u>

<u />

<u> or</u> 4r+2 > 18 subtract 2 from both sides of the equation

4r > 16 divide both sides by 4

<u> r > 4 </u>

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1 year ago

Read 2 more answers