Which inequality represents all values of x for which the quotient below is
defined?

Find the sum of the measure of the interior angles of a polygon of 9 sides ; of 32 sides

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality