Which of the following statements about parallelograms is not always true? a. diagonals are congruent. b. opposite sides are parallel. c. diagonals bisect each other. d. opposite angles are congruent.

Suppose that x and y are both differentiable functions of t and are related by the given equation. use implicit differentiation with respect to t to determine startfraction dy over dt endfraction in terms of x, y, and startfraction dx over dt endfraction .

Isee the amount was $90.00 then reduced to $75.00 , what is the percent ?

What is f(3) for the quadratic functionf(x)=2x2 + x – 12? f -3g 3h 6i. 9