Two fair coins are tossed. explain what the theoretical probability is of exactly one of the coins landing heads up.

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.

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.

Precalculus question, image attached.