Answer:
4
Step-by-step explanation:
12/2=6
20/2=10
10-6=4
Answer:
x = 0 and x = 1
Step-by-step explanation:
Given that,
A football is kicked into the air. The height of the football can be modeled by the equation :
![h = -16x^2 + 16x](https://tex.z-dn.net/?f=h%20%3D%20-16x%5E2%20%2B%2016x)
Where
h is the height reached by the ball after x seconds
When it touches the ground, h = 0
So,
![-16x^2 + 16x=0\\\\16x(-x+1)=0\\\\x=0\ and\ x=1](https://tex.z-dn.net/?f=-16x%5E2%20%2B%2016x%3D0%5C%5C%5C%5C16x%28-x%2B1%29%3D0%5C%5C%5C%5Cx%3D0%5C%20and%5C%20x%3D1)
So, it will touch the ground at x = 0 and x = 1 seconds.
Answer:
x = 9
Step-by-step explanation:
Step 1: Write equation
x + 8 = 17
Step 2: Solve for <em>x</em>
- Subtract 8 on both sides: x = 9
Step 3: Check
<em>Plug in x to verify it's a solution.</em>
9 + 8 = 17
17 = 17