Which of the following is not a true statement about pi?

a. the ratio of the circumference of a circle to its diameter

b. approximated to be 3.14

c. approximated to be 22/7

d. the ratio of the radius of a circle to its circumference

Which value is not a solution of 8x^3 – 1 = 0

Which number completes the inequality? 2/3 < _ < 7/9

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.