A 13 y 13 grid is checker boarded with 13rows and 13 columns of alternating black and white squares as partially shown. If the corner square is black what fraction of the squarres are black

If square root x = -7, then x= -49 true or false

Atriangle has an area of 72 square inches. if the base of the triangle has a length of 18 inches, what is the height of the triangle? use the formula for the area of a triangle: area = (base)(height) type a numerical answer in the space provided. do not include the units or spaces in your answer.

Jimmy can run 3.5 miles in 20 minutes. how far can ne run in one hour and ten minutes?