3x+2y-z=0
x-y+5z=2
2x+3y+3z=7

I need helping solving this three system linear equation.

Match the term on the left with its image or description on the right. match term definition diameter a) circle a and a line segment connecting points b and c which are on the circle. circumference b) circle a and a line segment connecting points b and c which are on the circle. radius c) a piece of the circumference of a circle secant d) two circles that share the same center. concentric circles e) the distance around a circle arc f) a segment between two points on a circle that passes through its center

For each proportion find the unknown number x 1/5/8=×/15

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?