When using the substitution method for solving a system of linear equations in three variables what should be the first step? Start by guessing at values for the variables

Add any two equations together to create one equation

Solve one equation for one of its variables

Graph the three equations

List the sides of δrst in in ascending order (shortest to longest) if: a ∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12°

Acylinder with a base diameter of x units has a volume of jxcubic units which statements about the cylinder are true? check all that apply. the radius of the cylinder is 2 x units. the radius of the cylinder is 2x units. the area of the cylinder's base is 200 square units. the area of the cylinder's base is a square units. the height of the cylinder is 2x units. the height of the cylinder is 4x units. mark this and return save and exit next submit

Item 1 solve for s. s+24=90 −114 −66 66 114