Answer:
7(3a + 5)
Step-by-step explanation:
Rewrite 21 as 7 · 3
Rewrite 35 as  7 · 5
Therefore,
⇒ 21a + 35 = 7 · 3a + 7 · 5
Factor out common term 7:
⇒ 7 · 3a + 7 · 5 = 7(3a + 5)
 
        
             
        
        
        
Answer:
5%
Step-by-step explanation:
150/3000
0.05
5%
commission btw is  
 
        
                    
             
        
        
        
Answer:
The equation for this sentence is: 9 = 2(4y)
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
the third side is 4.
Step-by-step explanation:
Using  Pythagorean theorem of a^2 + b^2 = c^2 for right triangles, substitute
the numbers to show ( +
 +  =
 =  and solve for b. The square root and square cancel each other out, so you get 65 +
 and solve for b. The square root and square cancel each other out, so you get 65 +  = 81.
 = 81.
Subtract 65 from both sides to get  = 16.
 = 16.
Then take the square root of both sides to get b =  which equals 4.
 which equals 4.