SOMEONE HELP PLEASE What is the x-coordinate of the solution of the following system of equations?

3x + y = 6
x - y = 6

A. -3
B. 0
C. 3

Arunning track in the shape of an oval is shown. the ends of the track form semicircles. a running track is shown. the left and right edges of the track are identical curves. the top and bottom edges of the track are straight lines. the track has width 56 m and length of one straight edge 130 m. what is the perimeter of the inside of the track? (π = 3.14) 260.00 m 347.92 m 372.00 m 435.84 m

Find the value of x for which abcd must be a parallelogram -9-6x x-30

Write an expression that has three terms and simplifies to 4x - 7. identify the coefficient(s) and constant(s) in your expression