The number of kilograms of water in a human body varies directly as the mass of the body. A 90​-kg person contains 60 kg of water. How many kilograms of water are in a 69​-kg ​person?

How do you convert 1.27 to a percentage

When the solutions to each of the two equations below are graphed in the xy-coordinate plane, the graphs of the solutions intersect at two places. write the y-cordninates of the points of intersection in the boxes below in order from smallest to largest. y=2x y=x^2-3

The volume of the a sphere whoes diameter is 18 cm is cubic cm . if it's diameter were reduced by half, it's volume would be of its original volume