Answer: B
Step-by-step explanation:
 
        
             
        
        
        
3c-d
3c-(-c+7)
3c+c-7
4c-7
Final answer: 4c-7
        
             
        
        
        
<h2>a. 20 & 9 are the coefficients and x & y are the variables of the expression.</h2><h2>b. There are 2 terms in the expression they are 20x & 9y the reason why is  because the two terms are separated by addition</h2><h2>c. The term that shows the total of every hedge that was trimmed is 9y
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Answer:
Capacity of tank = 44,000 l 
Step-by-step explanation:
Given:
Height of tank = 3.5 m
Radius = 2 m
Find:
Capacity of tank
Computation:
Volume of cylinder = πr²h
Volume of cylinder = (22/7)(2)²(3.5)
Volume of cylinder = 44 m³
1m³ = 1000 l
So,
Capacity of tank = 44  x 1,000
Capacity of tank = 44,000 l 
 
        
             
        
        
        
Answer:
12 and 1/2 (12.5)
Step-by-step explanation: