Betty's height to jinlan's height

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

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

Use the elimination method to solve the systems of equations. choose the correct ordered pair. 7x+4y=39