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vladimir2022 [97]

3 years ago

10

PLEASE HELP WITH #4

1 answer:

Phantasy [73]3 years ago

7 0

A) x=1,-13
B) x= -1 +- square root of 21 dvided by 10
C) x= 3 +- i square root of 7 divided by 2
D) x= 1 +- i square root of 11 divided by 4

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Elena wonders how much water it would take to fill her cup. She drops her pencil in her cup and notices that it just fits diagon

ollegr [7]

Answer:

<h2>The cup can hold 240π cubic centimeters of water.</h2>

Step-by-step explanation:

Let's assume the cup is a cylinder. The pencil length is simulates a diagonal (hypothenuse), which forms a right triangle with the height of the cylinder and the diameter at the bottom. So, we apply Pythagorean's Theorem.

$17^{2} =15^{2} + d^{2}$

Solving for $d$ , we have

$289 - 225 = d^{2} \\d=\sqrt{64} \\ d=8$

Therefore, the diameter of the cylinder is 8 centimeres, which means its radius is 4 centimeters by definition.

The volume of a cylinder is defined as

$V= \pi r^{2} h$

Where $r$ is the radius and $h$ is the height. Replacing values, we have

$V= \pi \times 4^{2} \times 15 =\pi \times 16 \times 15\\V=240\pi \ cm^{3}$

Therefore, the cup can hold 240π cubic centimeters of water.

8 0

2 years ago

Larry plans to paint 2 walls in his room. The ceiling is 8 ft above the floor. One of the walls is 13 ft wide and the other is 1

castortr0y [4]

10x8=80ft + 13x8=184

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3 years ago

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2 years ago

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Answer:

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Step-by-step explanation:

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5 0

2 years ago

WILL GIVE BRAINLIEST THANKS!!!

scoray [572]

Answer: B

Step-by-step explanation:

7 0

2 years ago