If the scale factor between two circles is 2x over 5y, what is the ratio of their areas?
A. 2x over 5y
B. 2x to the power of 2, over 5y to the power of 2
C. 4x to the power of 2 pi, over 25y to the power of 2
D. 4x to the power of 2, over 25y to the power of 2

Mercury poisoning is dangerous overload of mercury within the body. a major source of mercury within the body, a major source of mercury poisoning is consuming fish that contain mercury. certain fish are more prone to having higher levels of mercury than others. the pie chart shows the distribution of four breeds of fish at a hatchery. the hatchery has approximately 6,000 fish. a biologist from the centers for disease control and prevention randomly test 5% of each breed of fish for mercury content. her findings are shown in the following table. based on the biologist's findings, if a single salmon is randomly selected from those that were tested, what is the probability that this particular fish would have a dangerous mercury level? a) 0.001 b) 0.004 c) 0.02 d) 0.08

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0