Answer:
0
Step-by-step explanation:
0 times anything is zero
That is true, perpendicular lines must form right angles
If you subtract 4 from both sides your left with 15, then divide by 3 to find x. your left with x=5
33.3 repeating
This can be simply found out by dividing 3.75 from 1.25
1.25 / 3.75 = .33
Answer: 1. C, 2. B, 3. C, 4. C, 5. B, 6. B