Solve the system by substitution.
-2x – 4y = -18
x=y

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle

Acircle has a circumference of 7.850 units. what is its radius?

Which statements describe the solutions to the inequality x< -20 check all that apply. there are infinite solutions. each solution is negative. each solution is positive. the solutions are both positive and negative. the solutions contain only integer values. the solutions contain rational number values.