Which of the following statements is true? Select all that apply.

PLEASE HELP

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.

Which type of graph would allow us to quickly see how many students between 100 and 200 students were treated?

What is the area of the shaded sector?