A glass-enclosed elevator at a sports arena moves upward from the ground floor at a constant speed of h = 9t.
2 answers:
Answer:
1.7 3.2 SECOND
IF BALL SPIN INTO THE PERIMETER
Answer:
b. 3.2 seconds
Step-by-step explanation:
Given the 2 functions:
h = 9t
h= -16t² + 60t
When the height is the same for both objects:
9t = -16t² + 60t
0 = -16t² + 60t - 9t
0 = -16t² + 51t
0 = t(-16t + 51)
which has two solutions:
t = 0
or
-16t + 51 = 0
51 = 16t
t = 51/16 = 3.2
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Step-by-step explanation:
Answer:
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Step-by-step explanation:
Simplify the parentheses:
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Answer:
False
Step-by-step explanation:
lets find out..
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now we sub
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