Answer:
2 seconds and 38 seconds
Step-by-step explanation:
h=-16t²-vot
1,200=-16t²-640t
turn this into standard form
16t²-640t+1200=0
now plug thes numbers into the quadratice formula
a 16 b -640 c 1200
solve with quadratic formula to get ≅2 and ≅38 seconds
As a fraction it would be 47/50
Answer:
21
Step-by-step explanation:
1/5 x 21 = 21/5
Answer: 4/15
Step-by-step explanation: i would wait for someone to answer in case im wrong