6 bags cost $16.50 How much is 3 bags

Which math sentence can be used to determine if the triangle is a right triangle?

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.

Which of the following is the shape of a cross section of the figure shown below