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2 years ago

The volume of a cylinder is 480 cm. The height of the cylinder is 30 cm. What is the radius of the

Mathematics

1 answer:

IRINA_888 [86]2 years ago

8 0

Answer:

Step-by-step explanation:

Given

Volume of Cylinder (V)= 480 cm

height (h) = 30 cm

radius (r) = ?

WE KNOW THAT WE HAVE FORMULA

Volume (V) = $\pi r^{2} h$

480 = 3.14 * r^2 *30

480 = 94.2 r^2

480/94.2 = r^2

r^2 = 5.1

r = $\sqrt{5.1}$

Therefore r = 2.3 cm

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slega [8]

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2 years ago

Salaries of 49 college graduates who took a statistics course in college have a mean, x overbar, of $ 65 comma 300. Assuming a

Molodets [167]

Answer: $60,540< \mu$

Step-by-step explanation:

The confidence interval for population mean is given by :-

$\overline{x}-z^*\dfrac{\sigma}{\sqrt{n}}< \mu$

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n= sample size

$\overline{x}$ = Sample mean

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Given : $\sigma=\$17,000$

n= 49

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Two-tailed critical value for 95% confidence interval = $z^*=1.960$

Then, the 95% confidence interval would be :-

$65,300-(1.96)\dfrac{17000}{\sqrt{49}}< \mu$

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Hence, the 95% confidence interval for estimating the population mean $(\mu)$ :

$60,540< \mu$

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2 years ago

Rewrite the expression in the form 9^n<br> (9^3) (9^12)

BartSMP [9]

Answer:

${9}^{15}$

Step-by-step explanation:

$( {9}^{3} ) \times ( {9}^{12} ) = 9 {}^{3 + 12} = {9}^{15} \\$

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2 years ago

Use the Pythagorean Theorem to determine if the three numbers could be the measures of the sides of a right triangle. Assume tha

Mekhanik [1.2K]

I'm pretty sure the answer is yes

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2 years ago

What is the answer to this... 2/3+w=1 1/2

Natali5045456 [20]

Hi there,

2/3 + w = 11/2
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Hence, W = 29/6

Hope this helps :)

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3 years ago

Read 2 more answers