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kirill115 [55]
2 years ago
13

Which of the following is the correct point-slope equation for the line that

Mathematics
1 answer:
LuckyWell [14K]2 years ago
5 0
The only possible answer is B. Point slope form always starts with Y - the y value, but since the y value is a negative number it makes it a double negative causing it to become a positive 6
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So the polynomial 24r squared represents the surface are of a cube a : determine the polynomial that represents the area of one
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Answer:

a. 4r² b. 2r c. 6 cm

Step-by-step explanation:

The surface area A of the cube is A = 24r². We know that the surface area, A of a cube also equals A = 6L² where L is the length of its side.

Now, equating both expressions, 6L² = 24r²

dividing both sides by 6, we have

6L²/6 = 24r²/6

L² = 4r². Since the area of one face is L², the polynomial that determines the area of one face is A' = 4r².

b.  Since L² = 4r² the rea of one face of the cube, taking square roots of both sides, we have

√L² = √4r²

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So, the polynomial that represents the length of an edge of the cube is L = 2r

c. The length of an edge of the cube is L = 2r. When r = 3 cm.

L = 2r = 2 × 3 cm = 6 cm

So, the length of an edge of the cube is 6 cm.

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