What is the perimeter of a rectangle that has a length of 8 cm and a width of 5 cm

To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12

Let x = a + bi and y = c + di and z = f + gi. which statements are true?