Leyla drops a penny from a height of 150 m.
2 answers:
When the penny hits the ground, h will = 0.
So: Set h(t) = 0 = -4.9t^2 + 0t + 150 m
Then 4.9t^2 = 150, and so t^2 = sqrt(150 / 4.9) = plus or minus 5.53 sec.
We can use only the positive root, as we're measuring time.
t = 5.5 sec (answer)
Wrong question...
Answer:
The answer is 3.8
Step-by-step explanation:
You might be interested in
H²+10h+21 = 0
h²+3h+7h+21 = 0
h(h+3)+7(h+3) = 0
(h+3)(h+7) = 0
h+3=0
h = -3
h+7=0
h=-7
2 4/5=14/5, 3 1/2=7/2
A=l*w
14/5*7/2=98/10
98/10=9 8/10, 9 4/5
A= 9 4/5
Answer: Its area is 9 4/5m^2
-6/7 < -6.7
i hope this helps
Answer:
(-7)×(-7)=+49
You change the signs and multiple
Answer:
Step-by-step explanation:
Hope it helped u
