What is the solution to y = 0.2x for the replacement set x = {3}?

What number should be added to both sides of the equation to complete this square? x^2-10x=7

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Graph g(x)=2cosx . use 3.14 for π . use the sine tool to graph the function. graph the function by plotting two points. the first point must be on the midline and closest to the origin. the second point must be a maximum or minimum value on the graph closest to the first point.