Answer:
C
Step-by-step explanation:
∠1 = 3x + 18 {Vertically opposite angles}
∠1 + 28° = 90
3x + 18 + 28 = 90
3x + 46 = 90
3x = 90 - 46
3x = 44
x = 44/3

Answer:
C, F, and maybe D are correct.
Step-by-step explanation:
Answer:
C. Add the equations
Step-by-step explanation:
Adding both the equations will help eliminating 5y.
Answer:
D
Step-by-step explanation:
After you get the answer then you should feel in the d with the number. Example:
-20D=40
Divide both sides by -20
D=-2
So know you should fill in d
-20(-2)=40
40=40
True