The perimeter of a semicircle is 20.56 kilometers. What is the semicircle's diameter?
Use 3.14 for .

Simplify the expression. -2/5(10+15m-20n)

(mc 02.03) what set of reflections and rotations would carry rectangle abcd onto itself? reflect over the y-axis, reflect over the x-axis, rotate 180° rotate 180°, reflect over the x-axis, reflect over the line y=x reflect over the x-axis, rotate 180°, reflect over the x-axis rotate 180, reflect over the y-axis, reflect over the line y=x

Solve 13 + w/7= -18 (w/7 is a fraction)