Answer:
-16t^2 + 106 = 47
t = √59/4
Explanation:
106 - 59 = 47
-16t^2 + 106 - 106 = 47 - 106
-16t^2 = -59
-16t^2 / -16 = -59 / -16
t^2 = 59/ 16
√t^2 = √59/16
t= -√59/4 and √59/4
but you cant have negative time, so √59/4
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