Answer:


Step-by-step explanation:


to use the elimination you have to make one of the numbers same
so

and you would have to change the sign so that both of the 3x could cancel out.
New system of equation




so we know the y value so now you could find the x value take one equation



you could try it with both of the equations






Answer:
i think the answer is 7^3
Step-by-step explanation:
when dividing numbers with exponents, you just subtract the smaller exponent from the larger one
pls tell me if im wrong
75.6 ft^2
The surface area of a pyramid is always squared. Hope that helps