Pythagorean theorem worksheet, I need help!

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

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.

Divide. write in simplest form 41/6 divided by 10