9. What is the solution to this system of equations? 2x – 3y = 5 -12x +92 y = 2. a. (7.15,3.1) b. (6.65,6.1) c. (8.9375,-7.625) d. Not Here​

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

The diagonals of a quadrilaretral intersect at (-1,4). one of the sides of the quadrilateral is bounded by (2,7) and (-3,5) determine the coordinates of the other side in order for the quadrilaretral to be a square.

Find the domain of the following expression: 1/(√x)-2