x = hours
car 1 left an hour before car 2 so you have 55(x+1)
car 2 = 75x
add them together to equal miles driven:
55(x+1) + 75x = 380
55x+55 + 75x = 380
combine like terms:
130x+55 = 380
subtract 55 from each side:
130x = 325
divide both sides by 130
x = 325 /130 = 2.5
x = 2.5 hours
so 2.5 hours
Answer:
B. you can check the second one
Answer:
I think it’s the proof is correct.
Step-by-step explanation:
I was able to eliminate the other answers
Answer:
true;)
Step-by-step explanation:
its right