10) Mia estimated that there were 450 people at a concert. The actual number of people at the concert was 375.
What was the percent error in Mia's estimate? Show your work.

Which statement is not always true for a parallelogram? (a) opposite sides are congruent. (b) diagonals bisect each other. (c) it has 4 congruent angles. (d) consecutive angles are supplementary.

25 ! the line of best fit is h = 5a + 86. predict the height at age 16. show your work.

Which represents the solution set of the inequality 5x-9 < 21? a. x < 12/5 b. x > 12/5 c. x > 6 d. x < 6