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:
it may be B but I think it's C
Step-by-step explanation:
not sure if this is right, but I would say not congruent. it may be sas but in order for it to be sas then the Angle must be in-between the two congruent sides
Answer:
14.14 i hope this helps lol ;)
I'm pretty sure that it's b. That's assuming that you find the negative of b^2 and not the square of negative b.