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Gnesinka [82]
3 years ago
6

All ball is thrown into the air with an upward velocity of 24 ft/s. Its height h in feet after t seconds is given by the functio

n h=-16t^2+24t+7. a. In how many seconds does the ball reach its maximum height? Round to the nearest hundredth if necessary. What is the ball's maximum height?
Mathematics
1 answer:
VARVARA [1.3K]3 years ago
7 0
//I'm going to use differentiation to show you how to do this, although I would normally use mechanics.

dh/dt = -32t + 24
-32t + 24 = 0 when maximum
32t = 24
t = 24/32
t = 3/4

//To find the maximum height just substitute "t" in

h = -16 (9/16) + 24(3/4) + 7
h = -9 + 18 + 7
h = 16ft
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Eva8 [605]
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11/2 pages in 12 minutes 

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Let's write a proportion
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8 0
3 years ago
Solve equation. Verify answer 14=-2w
notka56 [123]

Answer:

w = -7

Step-by-step explanation:

Isolate the variable, w. Note the equal sign, what you do to one side, you do to the other.

Divide -2 from both sides:

(14)/-2 = (-2w)/-2

(14)/-2 = w

Note that when you are dividing:

  • 1 negative & 1 positive sign will result in a negative answer
  • 2 negative sign will result in a positive
  • 2 positive sign will result in a positive

In this case:

(14)/-2 = -7

-7 is your answer for w.

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8 0
3 years ago
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Sliva [168]

Answer: 0.83

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The fraction of Teddy's cousins what can do push-ups is \frac{5}{6}. We get this fraction because the problem states that 5 of Teddy's 6 cousins can do 15 push-ups. Now that we have our fraction, we divide to get our decimal.

\frac{5}{6} =0.83

7 0
3 years ago
What is the length of GH? ______cm
Daniel [21]
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60 = 4*x
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GH is 15cm
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3 years ago
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Answer:

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