In the lcm of 3a^2b^4c^5 and 7a4bc^2, what is the exponent on the b?

a)1
b)4
c)5
d)6

sorry that i suck at math! ~ -katie

Compare these two waves: the blue and orange waves have the same pitch, but the blue wave is louder. the blue and orange waves have the same volume, but the blue wave has a higher pitch. the orange wave has a higher pitch, but the blue wave is louder. the blue wave has a higher pitch, but the orange wave is louder.

How to solve a simultaneous equation involved with fractions?

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?