-(28.62-27.56)
= -1.06 or -53/50,-13/50
B, 50. because the triangle next to it is the exact same thing.
Answer:
Step-by-step explanation:Since we want to know how much time elapsed since the object was launched until it ht the ground. At the ground, the height is 0.
Therefore the equation h(t) = 80t – 16t2 becomes 0= 80t – 16t2
Solving the equation for t gives 80t =16t2 or 16t=80 or t=5sec
The object hits the ground 5 seconds after it is launched.
X < -16 is the solution
Hope this helped
