What is Circumference= 21.98 in.
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What is the quotient of -3/8and-1/3?

What is the simplified expression for 6(2(y+x))

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.