The correct model of the height of rocket above water is;
h(t) = -16t² + 96t + 112
Answer:
time to reach max height = 3 seconds
h_max = 256 ft
Time to hit the water = 7 seconds
Step-by-step explanation:
We are given height of water above rocket;
h(t) = -16t² + 96t + 112
From labeling quadratic equations, we know that from the equation given, we have;
a = -16 and b = 96 and c = 112
To find the time to reach maximum height, we will use the vertex formula which is; -b/2a
t_max = -96/(2 × -16)
t_max = 3 seconds
Thus, maximum height will be at t = 3 secs
Thus;
h_max = h(3) = -16(3)² + 96(3) + 112
h_max = -144 + 288 + 112
h_max = 256 ft
Time for it to hit the water means that height is zero.
Thus;
-16t² + 96t + 112 = 0
From online quadratic formula, we have;
t = 7 seconds
You can say 1/2 = 8/16 so the answer is : 9/16 + 8/16 = 17/16 = 1.06 :))
i hope this is helpful
have a nice day
Answer:
1,A 2:C
Step-by-step explanation:
5 can go into 20 4 times. If 5 was already there then it is 400 times the original number or 5.
OR
5/100 = 20/x Rearrange x5 = 20x100 2000/5 = x x=400
So this way we can do it. Thankyou!
