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2 years ago

11

A student cost for last semester at her community college was 2300 she spent 414 of that on books what percent of last semester’

s college costs was spent on books ?

1 answer:

Crank2 years ago

5 0

414/2300 ×100% = 18%

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Answer the question below in the image

Arlecino [84]

Void: 240
1000/400 = 2.5
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2 years ago

I need to find the surface area. it's a cut sphere with a diameter of 14.

alex41 [277]

Given data:

The diameter of the cut sphere, D=14 in.

The radius of the cut sphere is,

$\begin{gathered} r=\frac{D}{2} \\ r=\frac{14}{2} \\ r=7\text{ in} \end{gathered}$

The cut sphere is called a hemisphere.

The surface area of a sphere is

$A_1=4\pi r^2$

So, the lateral surface area of a hemisphere is half the surface area of sphere. Therefore, the lateral surface area of a hemisphere is,

$\begin{gathered} A_2=\frac{4\pi r^2}{2} \\ A_2=2\pi r^2 \end{gathered}$

The hemisphere has a lateral surface and a circular surface. The area of the circular surface is,

$A_3=\pi r^2$

Therefore, the total area of the hemisphere is,

$\begin{gathered} A=A_2+A_3 \\ A=2\text{ }\pi r^2+\pi r^2 \\ A=3\text{ }\pi r^2 \end{gathered}$

The total surface area of a hemisphere is,

$\begin{gathered} A_{}=3\text{ }\pi r^2 \\ A=3\text{ }\pi\times7^2 \\ A=461.8in^2 \end{gathered}$

Therefore, the total surface area of the cut sphere is 461.8 square inches.

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7 months ago

SUPER EASY! FRACTIONS PLS HELP!

Ymorist [56]

Answer:

1: 1/3

2: 3/19

3: 7/3

Step-by-step explanation:

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2 years ago

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netineya [11]

Answer:

I want to say A)

Step-by-step explanation:

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2 years ago

Please help me, will mark brainliest.

Bingel [31]

The answer will be (A). Since you reflect it off the x-axis then you translate it left 10.

Hope this helps!

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2 years ago