Answer:
60
Step-by-step explanation:
 45/9=5 an 12x5=60
jus trust
 
        
                    
             
        
        
        
M- 2 b- 3 ... 2x+3 negative slope not sure if proportional or not
        
                    
             
        
        
        
Answer:
Option A is correct.
The given expression :  then;
 then;

Step-by-step explanation:
Given the expression: 
Cross multiplication the given expression following steps are as follow;
- Multiply  numerator of the left-hand fraction by the denominator of the right-hand fraction
- Also, Multiply numerator of the right-hand fraction by the denominator of the left-hand fraction.
- then, set the two products equal to each other.
Using cross multiplication, on the given expression;

First multiply the numerator of the left hand fraction(i.e,a ) by the denominator of the right hand fraction (i,e a)
we have;

Simplify:
 [1]
                              [1]
now, multiply numerator of the right-hand fraction( i.e, 9) by the denominator of the left-hand fraction (i.e, 4 ) in [1]
we have;

Simplify:

Therefore, the given expression is equal to: 
 
        
                    
             
        
        
        
2 because there are 4 numbers of edges and 4 vertices
        
             
        
        
        
Answer:
The simplest (and most commonly used) area calculations are for squares and rectangles. To find the area of a rectangle, multiply its height by its width. For a square, you only need to find the length of one of the sides (as each side is the same length) and then multiply this by itself to find the area.