2 years ago

Pls help i need to pass this test

Mathematics

2 answers:

Mariana [72]2 years ago

7 0

Answer:

number 3

Step-by-step explanation:

victus00 [196]2 years ago

3 0

I think it's number 3 (srry if it wrong)

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A giant scoop, operated by a crane, is in the shape of a hemisphere of radius 21 inches. The scoop is used to transfer molten st

eduard

Answer:

31.5 in

Step-by-step explanation:

Volume of a hemisphere = (2/3) $\pi$ r³
(where r is the radius)
Volume of a cylinder = $\pi$ r²h
(where r is the radius and h is the height)
radius r = (1/2) diameter

First, find the volume of the scoop using the volume of a hemisphere formula with r = 21:

Volume = (2/3) $\pi$ x 21³ = 6174 $\pi$ in³

Now equate the found volume of the scoop to the equation of the volume of a cylinder with r = 14, and solve for h:

$\pi$ 14²h = 6174 $\pi$

196 $\pi$ h = 6174 $\pi$

Divide both sides by $\pi$ : 196h = 6174

Divide both sides by 196: h = 31.5

Therefore, the height of the molten steel in the storage tank is 31.5 in

3 0

2 years ago

Pls show me proof, thank you

Karo-lina-s [1.5K]

The y has to be negative but the x positive. So that leaves only (3,-4)

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3 years ago

Identify the problem with the following study. It was found that a third of all people in the United States live in urban center

Lyrx [107]

Small sample, because there needs to be more that just three people to determine if the study is true.

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2 years ago

Sam sells two notebooks for $3.50 each and a pen for $3. He earns a profit of $1. Sam's profit represents what percent of the to

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