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SpyIntel [72]
3 years ago
13

Simplify (4x+7)-(-3x-9)+9x-28

Mathematics
1 answer:
MrRissso [65]3 years ago
8 0

Answeriadk

Step-by-step explanation:

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A square with an area of 64 in2 is rotated to form a cylinder. What is the radius of the cylinder?
romanna [79]
The area of the square is calculated through the equation,

                               Area = e²

where e is the measure of sides.
 
From the given,

                              64 = e²
                               e = sqrt 64 = 8 inches

The length of the side of the square rotated to form the cylinder is the diameter of the base of the cylinder. To get the radius, we divide the diameter by 2.

                             radius = 8 inches / 2 = 4 inches

Thus, the radius of the cylinder is equal to <em>4 inches</em>. 
5 0
4 years ago
Help me please, guys <br>​
devlian [24]

Answer:

7.7

Step-by-step explanation:

The area of the wall is 4 * 2 = 8.

The radius of each clock is 0.3 / 2 = 0.15.

The area of all 4 circles is 4 * (πr²) = 4 * 3.14 * 0.15² = 0.3.

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3 0
3 years ago
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Write in figures;Nine million twenty thousand four hundred and six and twenty seven thousandths.​
Rzqust [24]

Answer:

9,020,406.27

Step-by-step explanation:

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3 years ago
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I need the explanation too !
lubasha [3.4K]
<h2>Step-by-step explanation:</h2>

- 2y + x + 3 - 5x + 7 + 4y

=  - 2y + 4y + x - 5x + 7 + 3

=  2y -  4x + 10

THIS IS YOU'RE ANSWER

HOPE IT HELPS

MARK ME THE BRAINLIEST...

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Why is it important to be able to solve for variables in equations?
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Because that way you can find the answer when you are given a large amount of information and you don't have to guess until you get the answer right.
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4 years ago
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