Evaluate: 2x(4+3) - (12÷2)

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.

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.

What is the scale factor of two similar pyramids with volumes of 64 cubic feet and 8 cubic feet