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3 years ago

Which expression represents the volume of the composite figure?

Mathematics

2 answers:

Mamont248 [21]3 years ago

7 0

You nee the area of the base of the prism times the height of the prism.

(1/2)(2)(4.4)(5) this is the volume of the prism

Now you need the volume of the solid above it.

(1/3)(1/2)(2)(4.4)(3.9)

Now you add both volumes.

musickatia [10]3 years ago

3 0

Answer choice d on composite figures

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A market surveyor wishes to know how many energy drinks teenagers drink each week. They want to construct a 98% confidence inter

frosja888 [35]

Answer:

The minimum sample size required to create the specified confidence interval is 1024.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

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$M = z*\frac{\sigma}{\sqrt{n}}$

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This is n when $M = 0.08, \sigma = \sqrt{1.21} = 1.1$ .

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$0.08 = 2.327*\frac{1.1}{\sqrt{n}}$

$0.08\sqrt{n} = 2.327*1.1$

$\sqrt{n} = \frac{2.327*1.1}{0.08}$

$(\sqrt{n})^{2} = (\frac{2.327*1.1}{0.08})^{2}$

$n = 1024$

The minimum sample size required to create the specified confidence interval is 1024.

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Step-by-step explanation:

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