Solve -39=-4(r 7)-11

Evaluate

- 39 = - 4 (r \times 7) - 11

Evaluate

More Steps

- 39 = - 28 r - 11

Rewrite the expression

28 r = 39 - 11

Simplify the expression

28 r = 28

Square both sides of the equation

(28 r)^{2} = 2 8^{2}

Evaluate

784 r^{2} = 2 8^{2}

To covert the equation to rectangular coordinates using conversion formulas,substitute x^{2} + y^{2} for r^{2}

784 (x^{2} + y^{2}) = 2 8^{2}

Evaluate the power

784 (x^{2} + y^{2}) = 784

Solution

x^{2} + y^{2} = 1

Solve the equation