9. Select all the statements that must be true. Select all that apply:
parallelograms have four congruent sides

Both sets of opposite sides of a parallelogram are parallel and congruent

A trapezoid is a parallelogram Diagonals of a parallelogram bisect each other

Diagonals of a parallelogram are congruent​

1 number

if we use a graphing calculator, there is only one such number that satisfies the conclusion of the mean value theorem, that is, a number such that

where the right-hand side is the average rate of change of f on the interval [0.5,0.75], which is the slope of the secant line.

in the attached graph, the black line is the secant line which has its slope as the average rate of change of f on [0.5,0.75], while the orange line is the only tangent line to the graph of f in the interval that satisfies the mvt conclusion.

$119.20

step-by-step explanation:

$372.50 - 60% off is $149. $149-20% off is $119.20