2*6 + 8 - 8
= 12 + 8 - 8
= 20 - 8
= 12
Answer: 9a+5x
Step-by-step explanation:
12a+7x-3a-2x=12a-3a+7x-2x=9a+5x
Write a proportion. x = variable/answer
15 x
200 100
1500/200=7.5
7.5%
Answer:
t = 8.69 s
Step-by-step explanation:
The height h of the rocket in feet above the surface of the lake can be modeled by :

Let we need to find the time to reach the ground. When it reach the ground, h = 0

We need to find the value of t.
t = 8.69 s and -2.45 s
Neglecting negative value,
t = 8.69 s
Hence, it will take 8.69 s to reach the ground.
Always
a=b
subtract c from each side
a-c = b-c