The sides of a triangle are on the lines x-2y+1=0, 3x-y-13=0, and 2x+y-13=0. Find the vertices.

Which expression is equivalent to √ -80?

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

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?