What's the least common multiple of 8, 11, and 12?

Which inequality comparing two of the expressions is true when 0.7 < x < 0.9

Which of the following are accepted without proof in a logical system? check all that apply.

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists