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2 years ago

What is the height of a cylinder with a volume of 315 pi cubic meters and a radius of 6 meters?

Mathematics

1 answer:

vladimir2022 [97]2 years ago

6 0

V= Pi × radius squared × height
V= 315 pi
R=6

315 pi = pi 6^2 h

315 pi/ 36 pi = h

Answer: C) 8.75

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Sold the equation. Round to the nearest hundredth. 17 · <img src="https://tex.z-dn.net/?f=1.8%5E%7B-x%2B7%7D%20%3D%205"

svetlana [45]

Answer:

Final answer is approx x=4.26.

Step-by-step explanation:

Given equation is $1.8^{-x+7} = 5$

Now we need to solve equation $1.8^{-x+7} = 5$ and round to the nearest hundredth.

$1.8^{-x+7} = 5$

$\log(1.8^{-x+7}) = \log(5)$

$(-x+7)\log(1.8) = \log(5)$

$(-x+7) = \frac{\log(5)}{\log(1.8)}$

$(-x+7) = \frac{0.698970004336}{0.255272505103}$

$-x+7 = 2.73813274192$

$-x = 2.73813274192-7$

$-x =−4.26186725808$

$x =4.26186725808$

Round to the nearest hundredth.

Hence final answer is approx x=4.26.

4 0

2 years ago

Solve for x. Express the answer in simplest form.1/7 = 3/4x - 1

shtirl [24]

1/7 = 3/4x-1
3/4x=1/7+1=8/7
x=8/7*4/3=32/21

4 0

3 years ago

374x+3=2995 ME GIVE BRAIN I MUST DO MY HOMEWORK you lifesaver...

Kaylis [27]

Hi there!

x=8

1.Subtract the answer with the 3 / subtract the terms:

$2995-3=2992$

2.Divide the two terms:

$2992*374=x$

Therefore, x=8

3 0

2 years ago

The ratio of the width to the length of a painting is 3 to 7. If the painting is 42 in. long how wide is it

belka [17]

If length is 42 inches, then width is 18 inches.

Step-by-step explanation:

We are given ratio of width to the length of a painting i.e 3 to 7. If the painting is 42 inches long, then how wide it is?

Solving:

$\frac{width}{length}=\frac{width}{length}\\ \frac{3}{7}=\frac{w}{42}\\ Cross\,\,multiply:\\3*42=w*7\\126=w*7\\w=\frac{126}{7}\\w=18$

So, If length is 42 inches, then width is 18 inches.

Keywords: Ratio

Learn more about Ratio at:

#learnwithBrainly

8 0

2 years ago

What is the recursive rule for the sequence?

love history [14]

Answer : option d

4.4, 5.8, 7.2, 8.6, 10, …

First we find the common difference between two terms

5.8 - 4.4 = 1.4

7.2 - 5.8 = 1.4

8.6 - 7.2 = 1.4

10 - 8.6 = 1.4

So common difference is 1.4

To find recursive rule, we add the difference with previous term

Recursive rule is $a_n = a_{n-1} + d$

a1 is the first term so a1= 4.4

d is the difference = 1.4

So recursive rule is

$a_n = a_{n-1} + 1.4$ , where a1 = 4.4

4 0

2 years ago