Are you trying to find the maximum height? The time it will be to reach the maximum height? I'm pretty confused at what you need help with right now
Answer:

Step-by-step explanation:
<em><u>Given:</u></em>

<em><u>Solve for:</u></em>

<em><u>Solution:</u></em>
(1) Let's move all of components that do not contain
(our target) to the right side (notice the change of sign of
from negative to positive):

(2) Let's divide both sides of equation by 4:

(3) Now, we simplify the left side:

This is the solution.
Hope this helps!
:)
48 degrees, anything opposite of a degree on the same 2 infinite lines will always be the degree.
Answer:
$17.28
Step-by-step explanation:
20% of $86.40
=
× $86.40
= 0.2 × $86.40
= $17.28 ← commission
4x + 3y = 54 (1)
3x + 9y = 108 (2)
Multiply (1) by (-3)
-12x - 9y = -162
3x + 9y = 108
---------------------add
-9x = -54
x = 6
plug x = 6 into (1) to find y
4(6) + 3y = 54
24 + 3y = 54
3y = 30
y = 10
Answer
(6 , 10)
Hope it helps.