60 is 20 percentage of what number ?​

1. what is the formula for finding the vertical distance between two points on a coordinate plane?

Select the correct answer from the drop-down menu. subtracting 3xy^2 from 8xy^2 gives the same result as the expression. [tex]3xy ^{2} - 8xy ^{2} [/tex][tex] { - 7xy}^{2} - {2xy}^{2} [/tex][tex] {7xy}^{2} - {2xy}^{2} [/tex]

Plz hurry evaluate the expression a+b where a=8 and b=19