What is the least common multiple of 90 and 54?

108
144
180
270

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

Multiply. write your answer in simplest form. 3/8 x 5/7

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.