Here is a system of two linear equations. x+y=4
2x + 3y = 18
The x value of the solution to the system of equations is
-10
-6
2
10

Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

Evaluate the expression. (9 + 5)(3 + 2)0

Rhombus adef is inscribed into a triangle abc so that they share angle a and the vertex e lies on the side bc . what is the length of the side of the rhombus if ab=c, and ac=b.