Use a truth table to determine whether the following argument is valid: 1. ~M ⊃ N
2. M
∴ 3. ~N

Jermaine has t subway tokens. karen has 4 more subway tokens than jermaine. raul has 5 fewer subway tokens than jermaine. which expression represents the ratio of karen's tokens to raul's tokens

The measure of an angle is 117°. what is the measure of a supplementary angle?

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height