Which of these strategies would eliminate a variable in the system of equations?
2x – 6y = 6
6x – 4y = 2

choose all answers that apply:

a. multiply the bottom equation by 3, then subtract the bottom equation from the top equation.

b. multiply the top equation by - 3, then add the equations.

c. multiply the bottom equation by -3/2
then add the equations.

Vikram is studying the square pyramid below. on st to find the surface area of the pyramid, in square inches, vikram wrote (33.2) (34 ikram wrote (33.2)(34.2)+43(34.2)(284) what error did vikram make? o he used the same expression for the area of all four lateral faces. he used the wrong expression to represent the area of the base of the pyramid. o he used the wrong value as the height when he found the area of the lateral faces. he used an expression for surface area that only finds the total area of three faces.