Represent 40% on the 10 by 10 grid.

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.

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

Solve x+3y=6 and 4x-6y=6 by elimination . show work !