Use an appropriate half-angle formula to find the exact value of the expression. cos(9pi/8)

Which point is on the line y=-2+3? (-2,-1) (3,3) (3,-3) (-3,-9)

Solve for x -2.3(r - 1.2 ) = -9.66 enter you answer as decimal.

What is true about the dilation? it is a reduction with a scale factor between 0 and 1. it is a reduction with a scale factor greater than 1. it is an enlargement with a scale factor between 0 and 1. it is an enlargement with a scale factor greater than 1.