A hundred metal spheres with the radius of 21cm are melted and this melted solution is poured into a cube and filled to the brim. what is the volume of the cube?

3x + 4y = 5 x- 3y = -7 solve by substitution

On the first of each month sasha runs a 5k race she keeps track of her times to track her progress her time in minutes is recorded in the table

Robin spent 25% more time on his research project than he had planned he’s been an extra h ours on the project which of the following expressions could represent the number of hours rob actually spent on the project