Answer:
the second option
Step-by-step explanation:
Answer:
8 seconds
Step-by-step explanation:
Given
h = - 5t² + 40t
When the object hits the ground then h = 0
Substitute h = 0 into the function and solve for t
- 5t² + 40t = 0 ← factor out - 5t from each term
- 5t(t - 8) = 0
Equate each factor to zero and solve for t
- 5t = 0 ⇒ t = 0
t - 8 = 0 ⇒ t = 8
t= 0 denotes the time of launch
t = 8 denotes the time it hits the ground
Answer:
A,C and B
Step-by-step explanation:
Step-by-step explanation:
6 significant figures......
Answer:
192 cakes
Step-by-step explanation:
36/12= 3
You multiply both numbers by 3:
12*3= 36 hours
64*3=192 cakes
192 cakes in 36 hours
