A ball is thrown into the air with an initial velocity of 80 ft/sec. The height of the ball after t seconds in the air is given by h(t) = -16t^2 + 80t + 96. How long will it take for the ball land on the ground? 8 seconds
1 second
6 seconds
12 seconds

Math Review Questions Please Help

h(t) = -16t^2 + 96t You want h(t) = 80 feet 80 = -16t^2 + 96t16t^2 - 96t + 80 = 0t2 - 6t + 5 = 0              [Factored out 16] Solve for t by factoring. There are two answers because the ball passes though 80 feet twice, once on the way up and again on the way back down. So, I’ll say 1 second

Step-by-step explanation:

the answer is c just got it on ed

step-by-step explanation:

she will sew have sewn five dresses   and be 1/3 done with the sixth one in an hour.

step-by-step explanation:

3/4 of an hour=45 mins

lucy makes 1 dress per 11.25 minutes

45 mins+11.25 mins=56.25 mins

60 mins- 56.25 mins=3.75 mins

3.75 mins is 1/3 of of 11.25 mins

therefore she the other 1/3 would be part of the hour and she will have sewn 5 dresses and begun the sixth.

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