Each square below represents one whole. What percent is represented by the shaded area? _% PLEASE ANSWER AND HELP ME

Which equation represents a circle with a center at (–3, –5) and a radius of 6 units? (x – 3)2 + (y – 5)2 = 6 (x – 3)2 + (y – 5)2 = 36 (x + 3)2 + (y + 5)2 = 6 (x + 3)2 + (y + 5)2 = 36

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

Identify the expression equivalent to 4(x + x + 7) − 2x + 8 − 4 by substituting x = 1 and x = 2.