The centroid of a triangle always lies on the interior of the triangle. true or false

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

Evaluate this using ! 0.25^2 x 2.4 + 0.25 x 2.4^2 − 0.25 x 2.4 x 0.65

Apyramid fits exactly inside a cube. the cube and the pyramid share the same square base, and they are both exactly the same height. the volume of the cube is 66 cubic inches. what is the volume of the pyramid? explain your answer. answer asap