Answer:
230 cm squared
Step-by-step explanation:
Split the shape into a triangle and a rectangle
The area of a triangle is base x height / 2
20 x 9= 180/2= 90             (9 because you do 16-7 to find height of triangle)
Find the area of the rectangle= 
7 x 20= 140
Add them up 
140+90= 230cm squared
<em>I hope this helped :)</em>
 
        
                    
             
        
        
        
See, pls, the offered decision:
1. this ratio has another form: 2x/3x/4x;
2. the difference between the largest and the smallest is 4x-2x=10.
Then x=5, and the sequence of numbers is 10/15/20, where 15 is the middle number.
Answer: 15.
        
             
        
        
        
Step-by-step explanation:

 
        
             
        
        
        
Answer:
9n÷7
Step-by-step explanation:
A quotient means a ratio or one quantity being divided by another, or in algebraic terms (a/b). In this case, the first quantity is "nine times a number" represented in terms of n as (n). The other quantity is just the number 7. 
 
Dividing the 9 times n by 9 gives us the following:
 
9n÷7 
<u><em>Hope this helps :></em></u>