Both the leftmost digit and the rightmost digit of a four-digit number
n are equal to 1. when these digits are removed, the two-digit number
thus obtained is n ÷ 21. find n.

If 25% of y is 30, what is 60% of y?

In a column proof the right column states your reasons

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