Answer:
- width: 18 in
- length: 27 in
Step-by-step explanation:
The relations between length (L) and width (W) are ...
   W +9 = L
   LW = 486
Substituting gives ...
   (W+9)W = 486
   W^2 +9W -486 = 0 . . . put in standard form
   (W +27)(W -18) = 0 . . . . factor
   W = 18 . . . .  the positive solution
The width of the rectangle is 18 inches; the length is 27 inches.
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<em>Comment on factoring</em>
There are a number of ways to solve quadratics. Apart from using a graphing calculator, one of the easiest is factoring. Here, we're looking for factors of -486 that have a sum of 9.
486 = 2 × 3^5, so we might guess that the factors of interest are -2·3² = -18 and 3·3² = 27. These turn out to be correct: -18 +27 = 9; (-18)(27) = -486.
 
        
             
        
        
        
Answer:
61
Step-by-step explanation:
straight line = 180 degree
to find the measure of angle QPR,
subtract 119 from 180
=>            180-119 
=>            61
angle QPR = 61 degree
 
        
                    
             
        
        
        
Answer:
yes
Step-by-step explanation:
 
        
             
        
        
        
Incorrect porque no sabes cómo hacerlo solo hazlo y ya!!
        
             
        
        
        
I'm sorry ninth grade slow learner