It is 30-88 degrees I think
        
                    
             
        
        
        
A because there is a difference between a expression and equation. Expressions don’t have a equal sign or an answer. But equations have an equal sign and an answer. So because everything else has an answer or equal sign, the correct answer would be A. Hope this helps!
        
                    
             
        
        
        
Answer:
Answer 2) When dividing by -5, he did not change the  to
 to  .
.
Step-by-step explanation:
If you divide or multiply a negative, you ALWAYS change the sign to its opposite. 
Hope this helps! :)
 
        
             
        
        
        
Answer:
The duration is 135 minutes ie. 2 hours and 15 minutes
 
        
             
        
        
        
Answer:
<h3>Length = 30 feet </h3><h3>Width = 21 feet </h3>
<em><u>Given </u></em><em><u>-</u></em><em><u> </u></em>Length is nine feet more 
 Area is 252 
<u>To </u><u>find </u><u>-</u><u> </u><u> </u>Value of length and width 
<em><u>Solution</u></em><em><u>-</u></em><em><u> </u></em>
let the width of the carpet be X 
therefore length = 9 + X 
Area of carpet = Length * width 
252 = (9+x) * X 
252 = 9x + x² 
<em><u>Solving </u></em><em><u>the </u></em><em><u>equation </u></em><em><u>by </u></em><em><u>splitting </u></em><em><u>middle </u></em><em><u>term </u></em>
x² + 9x - 252 = 0 
x²- 21x + 12x - 252= 0
x ( x - 21) + 12( x - 21) = 0 
(x -21)( x + 12) = 0 
X = 21 or X = (-12) 
Length = 9 + X 
= 30 or (-3) 
negative is not possible so 
length = 30 
width = 21