A what Tangler prism with a volume of 400 cm³ has the dimensions

What should be done to solve the equation? x+14=21 add 14 to both sides of the equation. subtract 14 from the left side of the equation. add 14 to the left side and subtract 14 from the right side of the equation. subtract 14 from both sides of the equation.

For what value of (y) is 3^3/3^y =1/9

Solve the system of equations using the substitution method. {y=−3x+7x=−2y−16 enter your answers in the boxes.