Find X if B is the midpoint of AC, AB= 3x+4 and BC= 12x-13

Question

anonymous · Answer

well, if AC is the full length, then AB and BC must both be half length each (therefore, they are equal)
so we can write this as:
AB = BC
3x+4 = 12x-13
3x = 12x - 17
-9x = -17
x = 17/9
i dont have a calculator on me so i'll let you punch that in and there's your answer. :)

anonymous · Answer

thanks i've been stuck on this question for awhile, so i was just working on other assignments

anonymous · Answer

no worries, does it make more sense to you now? let me know if there's anything you didn't understand and i'll gladly go over it for you.

anonymous · Answer

how long are you usually on here?

anonymous · Answer

usually a couple of hours each weekday. basically whenever i'm at school in a class i can use my laptop without getting busted.

anonymous · Answer

cool