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
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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.
Answer:
7/8
Step-by-step explanation:
The fraction closest to 1 is 7/8 because it is only 1/8 piece away from one.
Answer:
f(3) = 11
Step-by-step explanation:
f (x)=3x+ 2
Let x= 3
f (3) =3*3+ 2
= 9+2
= 11
The answer is 2
-3(2x+7)=-6x-21
