AB is the diameter of a circle, centre 0, with radius OA = 4.2 cm. ABCD is a square.
Calculate the shaded space.

Rewrite the hyperbolic equation 4y^2 -9x^2 +54x-8y-113=0

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.

Could someone with number 1 and 2