Answer:
0
Step-by-step explanation:
B. Yes, because both expressions equal 15 when y = 1
12y + 3y = (12*1) + (13*1) = 12 + 3 = 15y = 15*1 = 15.
x - 7 -28
I guarantee you that this is correct. It's pretty simple to understand.
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the relation is complementry angles.