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Paraphin [41]
3 years ago
10

If two opposite sides of a square are increased by 8 meters and the other sides are decreased by 5 meters, the area of the recta

ngle that is formed is 68 square meters. Find the area of the original square.
Mathematics
1 answer:
Alchen [17]3 years ago
5 0

Answer:

21

Step-by-step explanation:

8 * 2 = 16

5 * 2 = 10

68 - 16 = 52 - 10 = 42.

The perimeter of the square is 42.

42 / 4 = 10.5. 10.5 is the length of a side.

10.5 * 2 = 21.

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The function h is given by h ( t ) = ( 1 − t ) ( 8 + 16 t ) models the height of a ball in feet, t seconds after it is thrown.
Elena-2011 [213]

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Answer:

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  1 -t = 0   ⇒   t = 1

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The equation is used to model height after the ball is thrown. We don't expect it to be a good model before the ball is thrown (t < 0), so the zero in that region is extraneous.

Only the positive zero is in the function's domain, so that is the only one that is meaningful.

__

When t = 0 (at the time the ball is thrown), the function value is ...

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