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lidiya [134]
2 years ago
9

Kahleela starts the engine on her small private airplane. The engine drives a propeller with a radius of 8.5 feet and its center

line 11.5 feet above the ground. At idle, the propeller rotates at a constant speed of approximately 800 revolutions per minute. The height of one propeller tip as a function of time is given by h = 11.5 + 8.5 sin(800t), where h is the height in feet and t is the time in minutes. Find h when t = 5.5 minutes.
Mathematics
2 answers:
Lera25 [3.4K]2 years ago
6 0

Answer:

A. 3.1 feet is the answer i believe.........

Step-by-step explanation:

algol132 years ago
4 0

Answer:

a=21.1

Step-by-step explanation:

You can use the given (incorrect) equation and fill in the value of t to find h:

 h = 12.5 +9sin(750(3.5)) = 3.68 . . . . feet

__

Or, you can use the correct equation, or just your knowledge of revolutions:

 h = 12.5 +9sin(750(2π·3.5)) = 12.5 . . . . feet

in 3.5 minutes at 750 revolutions per minute, the propeller makes 2625 full revolutions, so is back where it started — at 12.5 feet above the ground.

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3 years ago
What name best describes this shape?
EastWind [94]

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Explanation:

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2 years ago
Which is equivalent toStartRoot 10 EndRoot Superscript three-fourths x ?
DENIUS [597]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
PLEASE HELP
nadezda [96]

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Step-by-step explanation:

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Hope I helped!

6 0
2 years ago
Read 2 more answers
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Licemer1 [7]
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