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Molodets [167]
3 years ago
7

The robotics club had 80 members. Because of the pandemic that amount decreased by 65%.

Mathematics
1 answer:
pogonyaev3 years ago
7 0

Answer: 28

Step-by-step explanation:

65% of 80 is 52

80 - 52 = 28

28 people

jeez, 52 people quit? That’s a lot!

sorry if it’s wrong. Have a great day!

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How many of these pitchers can a cylinder with height 9 inches and 2r fill? Explain how you know.
irakobra [83]

Answer:

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Step-by-step explanation:

if a cylinder with height 9 inches and radius r is filled with water, it can fill a certain pitcher. how many of these pitchers can a cylinder with height 9 inches and radius 2r fill? explain how you know.

Solution:

The volume of a cylinder is given by:

V = πr²h;

where V is the volume, r is the radius of the cylinder and h is the height of the cylinder.

A cylinder with height 9 inches and radius r can fill a certain pitcher. Therefore the volume of the cylinder is:

V = πr²h = πr²(9) = 9πr²

V = volume of pitcher = volume of cylinder with radius r = 9πr²

For a cylinder with height 9 inches and radius 2r its volume is:

V2 = πr²h = π(2r)²(9) = 36πr²

Therefore, the number of pitchers a cylinder with height 9 inches and radius 2r can fill is:

number of pitches = 36πr² / 9πr² = 4

Therefore a cylinder with height 9 inches and radius 2r can fill 4 pitches.

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2 years ago
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Answer:

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Step-by-step explanation:

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