Answer:
6
Step-by-step explanation:
The height of the debris after t seconds is given by the following equation:
![h(t) = 96t - 16t^{2}](https://tex.z-dn.net/?f=h%28t%29%20%3D%2096t%20-%2016t%5E%7B2%7D)
How many seconds will it take before the debris falls back to the ground?
This is t for which
![h(t) = 0](https://tex.z-dn.net/?f=h%28t%29%20%3D%200)
So
![96t - 16t^{2} = 0](https://tex.z-dn.net/?f=96t%20-%2016t%5E%7B2%7D%20%3D%200)
![16t(6 - t) = 0](https://tex.z-dn.net/?f=16t%286%20-%20t%29%20%3D%200)
or ![6 - t = 0](https://tex.z-dn.net/?f=6%20-%20t%20%3D%200)
or ![t = 6](https://tex.z-dn.net/?f=t%20%3D%206)
The debris start at the ground(t = 0), go up, and come back to the ground at t = 6s.
So it takes 6 seconds for the debris to fall back to the ground.
Answer:
k = 5/3
x = 21
Step-by-step explanation:
Here, we have two similar shapes
The scale factor here would be the ratio of the corresponding similar sides
so we have k as 15/9 = 5/3
To find the value of x
When two shapes are similar, the ratio of the sides corresponding are equal
So we have it that;
x/35 = 9/15
= 15 * x = 9 * 35
15x = 315
x = 315/15
x = 21
Answer:
Step-by-step explanation:
x2 + 14x + 1
That means it could be + - 3 degrees.
52 + 3 = 55
52 - 3 = 49
The temperature range is 49 to 55
Answer:It is in the attachment
Step-by-step explanation: