Atotal of 5 1/4 cups of baking soda was used for the muliple trials of science experience each trial used 3/4 cup of baking soda. how many trails were conducted

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.

Robin spent 25% more time on his research project than he had planned he’s been an extra h ours on the project which of the following expressions could represent the number of hours rob actually spent on the project

Hi i’m not sure how to do question 20 if u could explain how to do it that’d b great