Express the following sum in sigma notation: 1+4+7+10+13

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

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.

In order to be invited to tutoring or extension activities a students performance 20 point higher or lower than average for the