corresponding angles, therefore
m∠1 = m∠2 → m∠2 = 130°
vertical angles, therefore
m∠2 = m∠3 → m∠3 = 130°
If ∠1 and ∠2 are complementary, then m∠1 + m∠2 = 90°.
If ∠2 and ∠3 are complementary, then m∠2 + m∠3 = 90°
Therfore

Answer:
4.4
Step-by-step explanation:
that is the procedure above
The unknown number is X;
x/6+2=9;
X/6=7;
X=42;
The answer is 42
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