2x + y = -2
x+y=5
the x-coordinate of the solution to the system shown is
0-7

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Prove that quadrilateral is a rhombus.

Type the correct answer in the box. consider the system of linear equations below. rewrite one of the two equations above in the form ax + by = c, where a, b, and c are constants, so that the sum of the new equation and the unchanged equation from the original system results in an equation in one variable.