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Hitman42 [59]
3 years ago
13

Complete the inequality.

Mathematics
2 answers:
Paladinen [302]3 years ago
4 0

Answer:

is c

Step-by-step explanation:

i got it correct

Alex3 years ago
3 0
You answer will be B
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Help? with complete solution​ please help me please
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9514 1404 393

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  2. (a) 1 second; (b) t = 0, t = 1/2

Step-by-step explanation:

<h3>1. </h3>

Let w represent the length of the wire. Then the height of attachment is (w-1). The Pythagorean theorem tells us a relevant relation is ...

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  w² -2w +26 = w² . . . . . . . eliminate parentheses, collect terms

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  13 = w . . . . . . . . . . . . divide by 2

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<h3>2. </h3>

(a) When h = 0, the equation is ...

  0 = -16t^2 +8t +8

Dividing by -8 puts this into standard form:

  2t^2 -t -1 = 0

Factoring, we get ...

  (2t +1)(t -1) = 0

The positive value of t that makes a factor zero is t = 1.

It will take 1 second for the gymnast to reach the ground.

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(b) When h = 8, the equation is ...

  8 = -16t^2 +8t +8

Subtract 8 and divide by 8 to get ...

  0 = -2t^2 +t

  0 = t(1 -2t) . . . . factor out t

Values of t that make the factors zero are ...

  t = 0

  t = 1/2

The gymnast will be 8 feet above the ground at the start of the dismount, and 1/2 second later.

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