Which of the following is an advantage to using equations? (a). when given two names for the same quantity, you can use algebra to solve the equations (b). you can forget what an equation represents when it is used by itself. (c). every problem needs an equations if you want to solve it.

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

Acylinder with a base diameter of x units has a volume of jxcubic units which statements about the cylinder are true? check all that apply. the radius of the cylinder is 2 x units. the radius of the cylinder is 2x units. the area of the cylinder's base is 200 square units. the area of the cylinder's base is a square units. the height of the cylinder is 2x units. the height of the cylinder is 4x units. mark this and return save and exit next submit

50 points and will mark brainlest if you were constructing a triangular frame, and you had wood in the length of 4inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no? = explain your mathematical thinking: