Answer:
18.5 hours will take
Step-by-step explanation:
 
        
             
        
        
        
Answer:
3(x-6)+9=27
Step-by-step explanation:
1. Multiply 3 to x-6
3x-18+9=27
2. add -18 and 9
3x-9=27
3. add 9 to 27
3x=36
4. Divide 36 and 3
x=12
 
        
             
        
        
        
Answer:
m=3
Step-by-step explanation:
Perpendicular lines intersect at 90 degrees or perpendicular angles. As such, their slopes are related. The slope of each line is the negative reciprocal of the other. For the equation,  . The slope or
. The slope or  . This means the slope of the other line will be the negative reciprocal which is -(-3)=3
. This means the slope of the other line will be the negative reciprocal which is -(-3)=3