30b because 2 time 3 is 6 and 6 times 5 is 30 so its 30b
Answer:
3.8
Step-by-step explanation:
h(t) = -4.9 t² + v₀ t + h₀
Given that v₀ = 0 and h₀ = 70:
h(t) = -4.9 t² + 70
When the rock hits the ground, h(t) = 0.
0 = -4.9 t² + 70
4.9 t² = 70
t² = 14.3
t = 3.8
The rock hits the ground after 3.8 seconds.
Answer:

Step-by-step explanation:
The diagonals of a rectangle always bisect each other. Therefore, we can set
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