During an outing, Katherine picked 20 more apples than Noah, and Ryan picked 60 more than Noah. Altogether, the three of them picked 239 apples. How many apples did Ryan pick?

What is the perimeter of trapezoid jklm? + units 2 + + units 9 + units 9 + + units

One side of a rectangle is 7 feet shorter than seven times the other side. find the length of the shorter side if we also know that the perimeter of the rectangle is 306 feet.

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean