Y=x-2
..........................
.
Answer:c
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Step-by-step explanation:
c
<h3>
Answer: -3x-3y=-30= x=−y+10 </h3><h3>x+y+10= x=−y+10</h3>
X=40 degrees because it s on the circle. arc AD+arc DC=180 arc DC is 100 so AD is 80. That means x must be 40.
Using Pythagoras:
12^2+5^2= 144+25=169
√169= 13
