I believe y=x+2 and y=-x+3 are perpendicular lines.
Answer:

Step-by-step explanation:
- Multiply both the matrices on left side, we find:
- Comparing the corresponding elements of both the matrices on both sides, we find:
Answer:$80.24
Step-by-step explanation:68*0.18(18%)
12.24
68+12.24=$80.24
Answer: 6.89
Step-by-step explanation:
9x+53>= 115
Subtract 53 from both sides
9x+(53-53) >115-53
9x>62
Divide both sides by 9.
9x÷9>62÷9 = 6.889