64 and 729 or 55 and 49 which is both a square of a number and a cube?

1. are the triangles similar and if so why? what is the value of x? show your work.

If jaime wants to find 60% of 320, which table should he use?

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.