A) h=9.9
if that's not correct, i've done these before, i don't know why it wouldn't work?
        
             
        
        
        
Step-by-step explanation:
- (1/7)³=1³/7³=1/343
- 2⁵=32
- 1.4²=1,4×1,4=1,96
 
        
                    
             
        
        
        

if you have already covered slopes, you could also get it that way, in fact is  simpler that way.
 
        
             
        
        
        
Answer:
is it 22.
Step-by-step explanation:
is it?
 
        
                    
             
        
        
        
The equation of the central street PQ is  -1.5x - 3.5y = -31.5 option (b) is correct.
<h3>What is a straight line?</h3>
A straight line is a combination of endless points joined on both sides of the point.
We have a straight line:
 
  
Convert it to the general form given below:

 or
 or 

 (Slope of AB line)
   (Slope of AB line)
For the slope(m') of the PQ line:
 ( because AB and PQ are perpendicular to each other)
    ( because AB and PQ are perpendicular to each other)

We know the:

Where (x', y') = (7, 6), we get:


 (multiply by -1/2 on both sides)
   (multiply by -1/2 on both sides)
Thus, the equation of the central street PQ is  -1.5x - 3.5y = -31.5
Learn more about the straight line.
brainly.com/question/3493733