Is the “x2” supposed to be x squared?
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Answer:
59kg
Step-by-step explanation:
58kg * 15 members=870
870+74kg=944
944/16 total people =59kg
Answer:
A
Step-by-step explanation:
the rock lands when it reaches height 0.
so, for what t is h(t) = 0 ?
16t² - 100 = 0
16t² = 100
now we pull the square root on both sides (we can ignore the negative solutions, as negative seconds don't make any sense in our scenario)
4t = 10
t = 10/4 = 5/2 = 2.5 seconds
so, A is correct.
