In a cross-country race with a 35 participants, the mean finish time was 21 minutes . which statement must be true ?

Choose all answers that apply: a) ab and a’b’ are one the same line. b) quadrilaterals abcd and a’ b’ c’ d’ have the same perimeters. c) points a and a’ have the same coordinates. d) none of the above

Write the equations in logarithmic form 10^3=1,000

Proving the congruent supplements theorem