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Svetradugi [14.3K]

3 years ago

10

Alex made a sketch for a poster contest. The sketch measures 4 in. × 5 in. The scale factor from the sketch to the finished post

er was 2 in. to 5 in. What were the dimensions of the poster?

1 answer:

leonid [27]3 years ago

3 0

<span>4*5/2 = 10
5*5/2 = 25/2 = 12/5

The poster is 10 x 12.5 inches. </span>

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mash [69]

Answer:

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Step-by-step explanation:

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4 years ago

What is the length of side a? Round to the nearest tenth of an inch. <br><br> Please and thank youuu

lord [1]

Answer:

using Pythagoras rule, 16^2 -7^2 =a^2

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3 years ago

(a) Find the size of each of two samples (assume that they are of equal size) needed to estimate the difference between the prop

zalisa [80]

Answer:

(a) The sample sizes are 6787.

(b) The sample sizes are 6666.

Step-by-step explanation:

(a)

The information provided is:

Confidence level = 98%

MOE = 0.02

n₁ = n₂ = n

$\hat p_{1} = \hat p_{2} = \hat p = 0.50\ (\text{Assume})$

Compute the sample sizes as follows:

$MOE=z_{\alpha/2}\times\sqrt{\frac{2\times\hat p(1-\hat p)}{n}$

$n=\frac{2\times\hat p(1-\hat p)\times (z_{\alpha/2})^{2}}{MOE^{2}}$

$=\frac{2\times0.50(1-0.50)\times (2.33)^{2}}{0.02^{2}}\\\\=6786.125\\\\\approx 6787$

Thus, the sample sizes are 6787.

(b)

Now it is provided that:

$\hat p_{1}=0.45\\\hat p_{2}=0.58$

Compute the sample size as follows:

$MOE=z_{\alpha/2}\times\sqrt{\frac{\hat p_{1}(1-\hat p_{1})+\hat p_{2}(1-\hat p_{2})}{n}$

$n=\frac{(z_{\alpha/2})^{2}\times [\hat p_{1}(1-\hat p_{1})+\hat p_{2}(1-\hat p_{2})]}{MOE^{2}}$

$=\frac{2.33^{2}\times [0.45(1-0.45)+0.58(1-0.58)]}{0.02^{2}}\\\\=6665.331975\\\\\approx 6666$

Thus, the sample sizes are 6666.

7 0

3 years ago

Write this price as cents instead of dollars. $0.03

Elena-2011 [213]

None of the above there is no $0.03

5 0

3 years ago

Read 2 more answers

A food pantry is making packages. Each package weighs 64 pounds. Each of their packages contains 4 identical bags of rice and a

Vinil7 [7]

Answer:

64 = 4x + 7 Each bag of rice weighs 14.25 pounds.

Step-by-step explanation:

Each package is 64 pounds, which give us one side of the equal sign. The other side is ehre we make the 64 pounds. There is one 7 pound bag of beans, and four equal bags of rice. To find the pounds per bag of rice, we do 64-7 to get 57, then 57/4 to get 14.25

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3 years ago