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Alex_Xolod [135]
3 years ago
14

17. Stella is competing in a diving competition. Her height in feet above the water is

Mathematics
1 answer:
scoundrel [369]3 years ago
6 0

9514 1404 393

Answer:

  after 2 seconds

Step-by-step explanation:

We want to find t such that h = 0.

 0 = -16t² +8t +48

  0 = 2t² -t -6 . . . . . . . divide by -8

  0 = (t -2)(2t +3) . . . . factor

The only positive solution is t = 2, which makes the first factor zero.

Stella will land in the water at t = 2 seconds.

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