Answer:
11) 
Divide both sides by 2:


12)
(
if you wanted the exact value.
13) 
Switch sides:

Rearrange:


14) 



15) 




16) 
Multiply both sides by 4:


17) 
if you wanted the exact value.
18) 
if you wanted the exact value.
Bonus Question:
Terrorist attacks took place against the United States in September 11 2001.
This is named "September 11 attacks" and you can search more about it online.
Answer:
We must think that the cars are traveling 630 miles in six hours.
Their combined speeds are x and x+25.
distance = velocity * time
Since, velocity = distance / time
(x + x + 25) = 630 / 6
2x + 25 = 105
2x = 80
So x = 40 mph and the other car's velocity is 65 mph.
Step-by-step explanation:
I think it's the third one too
Answer:
Ummm because it makes you smarter???? I feel like this is a question to ask your teacher haha
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
The lines mean the distance away from 0. When i say lines, I mean the two "l" that accompany the numbers. I forgot what there called (good job me).
Since we want to know how far apart they are, we need to add them.