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3 years ago

The book fair a sale where 4 books were $31.36.If you wanted to buy 3 books, how much money would you need

Mathematics

2 answers:

mote1985 [20]3 years ago

8 0

Answer:

$23.52

Step-by-step explanation:

So first you would have to find how much each one would be if you were buying one individual book. For that you would do 31.36/4 to get $7.84. Then since you found that for only 1 book, you would need to multiply that by 3 to get $23.52

Alexandra [31]3 years ago

5 0

Answer:

oof. i am not good at these.

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Answer:

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Step-by-step explanation:

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3 years ago

Which of the following is a solution of y - x > -3? (6, 2) (2, 6) (2, -1)

Margarita [4]

(2, 6)
x = 2
y = 6
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6 - 2 > -3
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Therefore the answer is (2, 6)

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3 years ago

A number z, when rounded to the nearest whole, is equal to 70. Find the upper and lower bound of x

rusak2 [61]

Answer:

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2 years ago

Does anyone Know what y = 1.6x + 48?

mel-nik [20]

Answer:

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Step-by-step explanation

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3 years ago

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

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2 years ago