How are a common denominator and a common multiple alike and different

common denominator are different from common multiple because the denominator is the bottom number when u multiply or divide a fraction u find a common number out of the 2 bottom ones

common multiple and common denominator are alike because they both are numbers in common with the number u are working with.

I hope it helps  

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.

yes

step-by-step explanation:

yes