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.
Answer:
sum: 7.3 difference:2.7
Step-by-step explanation:
Answer:
Vertex is (3, 256)
Step-by-step explanation:
The vertex means that at 3 seconds, the highest point the ball will reach is 256 units in the air.
240 is 240% of 576
240% x 240 = x
(240 x 240) divide by 100
57,600 divide by 100 = 576
x = 576
