I belive it D or C srry if im wrong :( ill give u it back
x=-6+2y
x=2+2y
by subtraction
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x=-8
Substitute x by one of the two equations :
x=-6+2y
-8=-6+2y
2y=-8+6
2y=-2
y=-2/2
y=-1
I think this is the answer
I hope I helped you^_^
Answer: A is 45 degrees, B is 45 degrees, C is 90 degrees.
Step-by-step explanation: A triangle is 180 degrees, and those three numbers add to that. This would be considered a right triangle due to the 90 degree angle.
I believe it is 510 cm because a meter equals 100 cm so 210 cm times 2 equals 410 cm then multiply 45 times 2 and get 90 cm then add 410 plus 90 and get 510 cm.