156 divided by 8 is 19.5 i think the answer is 19
Answer:
X = 6
Step-by-step explanation:
See Attachment
Answer:
Step-by-step explanation:
x^2+20=2x move 2x to the left
x^2-2x+20=0
Quadratic formula =
x=1± i√19
For this case we must use the projectile equation for this problem.
We have then:
h (t) = - 16t ^ 2 + Vt + h
Where,
V: initial speed
h: height
For the tennis ball we have:
h (t) = - 16t ^ 2 + 130t + 2
Answer:
An equation that correctly models the ball's height as a function of time is:
h (t) = - 16t ^ 2 + 130t + 2
Answer:
<h2>
![x\leq - \frac{8}{15}](https://tex.z-dn.net/?f=x%5Cleq%20-%20%20%5Cfrac%7B8%7D%7B15%7D%20)
</h2>
Step-by-step explanation:
<h3>
![2x \leq - \frac{2}{7} (8x + 8)](https://tex.z-dn.net/?f=2x%20%5Cleq%20-%20%20%5Cfrac%7B2%7D%7B7%7D%20%288x%20%2B%208%29)
</h3>
<u>First of all multiply through by 7</u>
We have
<h3>
![14x\leq - 2(8x + 8)](https://tex.z-dn.net/?f=14x%5Cleq%20-%202%288x%20%2B%208%29)
</h3>
<u>Expand the terms in the bracket</u>
That's
<h3>
![14x\leq - 16x - 16](https://tex.z-dn.net/?f=14x%5Cleq%20-%2016x%20-%2016)
</h3>
<u>Add 16x to both sides</u>
That's
<h3>
![14x + 16x\leq16x - 16x - 16 \\30x\leq - 16](https://tex.z-dn.net/?f=14x%20%2B%2016x%5Cleq16x%20-%2016x%20-%2016%20%5C%5C30x%5Cleq%20-%2016)
</h3>
<u>Divide both sides by 30</u>
We have the final answer as
<h3>
![x\leq - \frac{8}{15}](https://tex.z-dn.net/?f=x%5Cleq%20-%20%20%5Cfrac%7B8%7D%7B15%7D%20)
</h3>
Hope this helps you