The circumference of Oc is 72cm, what is the length of AB (the minor arc)?

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

X2 + y 2 = 36 x + y = 6 solve the system of equations.

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?