What do i put in the missing number box?

Fredrick designed an experiment in which he spun a spinner 20 times and recorded the results of each spin

Write the equations in logarithmic form 7^3=343

Which statement explains how you could use coordinate geometry to prove the opposite sides of a quadrilateral are congruent? a. use the slope formula to prove the slopes of the opposite sides are the same. b. use the slope formula to prove the slopes of the opposite sides are opposite reciprocals. c. use the distance formula to prove the lengths of the opposite sides are the same. d. use the distance formula to prove the midpoints of the opposite sides are the same.