Write 5 to the power 2/ 5 root 5, as a single power of 5

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.

For the given quadratic equation convert into vertex form, find the vertex and find the value for x=6 y=-2x^2+2x+2

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.