X-2y=7
-3x+6y=-1
solve the system of equations

Acircle has a circumference of 28.36 units what is the diameter of the circle

Miss henderson wants to build a fence around a rectangular garden in her backyard in the scale drawing the perimeter of the garden is 14 in of the actual length of a b is 20 ft how many feet of fencing what you need

Peter measures the angles in a triangle. he finds that the angles are 95, 10 and 75. is he correct? explain your answer