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adell [148]
3 years ago
12

What percent of 71 hours is 108 hours?

Mathematics
1 answer:
marta [7]3 years ago
6 0

Answer:

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Step-by-step explanation:

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Please help!!! Will give brainly if correct!! 50 points
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Total 175 students.
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Students go 0-1 times per week = 73/175 = 0.4172 = 41.71%

Answer: last option
41.71%
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A spinner is spun once ( The spinner has 8 sections in it) What is the probability that the spinner will land on 5 or 7? A.8% B.
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8 0
3 years ago
As Juan continued his hitting practice showing off his abilities, one of the balls flew over the center field stands and into th
WARRIOR [948]

Answer:

  A. Find h(10) = 0 . . . (it is not)

  B. h(5.235) = 0; hang time was about 5.235 seconds

Step-by-step explanation:

The hang time of the ball is the value of x in h(x) such that h(x) = 0.

__

<h3>A.</h3>

Juan can show the hang time is 10 seconds by finding h(10) = 0. The value of h(10) is ...

  h(10) = -16(10²) +83(10) +4 = -1600 +834 = -766 ≠ 0

Juan cannot prove the hang time was 10 seconds.

__

<h3>B.</h3>

The hang time is the solution to ...

  h(x) = 0

  -16x² +83x +4 = 0 . . . . . use the given expression for h(x)

  x² -5.1875x = 0.25 . . . . divide by -16

  x² -5.1875x +6.7275390625 = 6.9775390625 . . . . add (5.1875/2)²

  (x -2.59375)² = 6.9775390625 . . . . . . . . . . rewrite as a square

  x = 2.59375 ±√6.9775390625 ≈ {-0.048, 5.235} . . . . square root, find x

The hang time of the ball was about 5.235 seconds.

__

We like a graphing calculator for finding a quick solution to questions like this.

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2 years ago
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