Answer:
Idk what u mean by fraction but 80% of 15 is 12
Step-by-step explanation:
Answer:
0.70=70/100
0.75=75/100
Therefore,
Fractions are
71/100,72/100,73/100,74/100
So you want height to be 0 so you plug zero into the height and solve from there. You subtract 192 from both sides to get -192=-16tsquared. Then you would divide by -16 and end up with 12 = t^2. Then you find the square root of 12 and get t = 3.464 seconds.