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3 years ago

Rectangle A measures 8 inches by 2 inches. Rectangle B is a scaled copy of Rectangle A.

Mathematics

1 answer:

Gnesinka [82]3 years ago

6 0

It should be 9 inches by 3inches

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6 divided by 1 and 2/3

SOVA2 [1]

6 divided by 1 = 6

2/3 = 0.66666667

4 0

3 years ago

Read 2 more answers

Linda Barnes has learned from prior studies that one out of five applicants gets admitted to top MBA programs in the country. Sh

LenKa [72]

Answer: 126

Step-by-step explanation:

As per given , we have

Prior Population proportion : $p=\dfrac{1}{5}=0.2$

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

Critical value for 95% confidence interval (using the z-value table) = $z_{\alpha/2}=1.96$

Margin of error (maximum error): $E=7\%=0.07$

Formula to find the sample size :

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2\\\\ n=0.20(1-0.20)(\dfrac{1.96}{0.07})^2\\\\ n=125.44\approx126$

Therefore , the required minimum sample size = 126

5 0

3 years ago

Maya is building a sandbox that is 36 inches wide. The length is four times the width. What is the perimeter of the sandbox? Sho

Alex17521 [72]

Answer: I believe the answer is 360 in.

Step-by-step explanation:

You can use Khan Academy

3 0

4 years ago

The heights of women aged 20 – 29 in the United States are approximately Normal with mean 64.2 inches and standard deviation 2.8

Alenkinab [10]

Answer:

a) 0.64

b) -1.13

Step-by-step explanation:

We are given the following information in the question:

Women:

Mean, μ = 64.2 inches

Standard Deviation, σ = 2.8 inches

We are given that the distribution of heights of women is a bell shaped distribution that is a normal distribution.

Men:

Mean, μ = 69.4 inches

Standard Deviation, σ = 3.0 inches

We are given that the distribution of heights of men is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

5.5 feet = 66 inches

a) z‑score for a woman 5.5 feet tall

$x = 66\\\\\Rightqrrow z = \displaystyle\frac{66 - 64.2}{2.8} = 0.64$

b) z‑score for a man 5.5 feet tall

$x = 66\\\\\Rightqrrow z = \displaystyle\frac{66 - 69.4}{3.0} = -1.13$

4 0

3 years ago

F(x) =x^2-5x write down the value of ff(2).

stiv31 [10]

It would be -6.
This makes use of the Remainder Theorem.

3 0

3 years ago