We want 4/5 of a number to be 144. This means that

Multiplying both sides by 5/4, we have

 
        
             
        
        
        
Answer:
52 weeks
Step-by-step explanation:
The club starting with $270 (club 1) is increasing their bank balance each week by ...
... $280 -270 = $10
The club starting with $10 (club 2) is increasing their bank balance each week by ...
... $25 -10 = $15
Club 2 is gaining on Club 1 by $15 -10 = $5 each week. So, the initial difference of $270 -10 = $260 will be overcome in ...
... $260/($5/week) = 52 weeks
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The same result is shown in the attached graph, which also shows that both clubs' bank balances will be $790 at that time.
 
        
             
        
        
        
So.. 2.86 - 2.79 is the amount in decrease or 0.07
so.. if we take 2.86 as the 100%, how much is 0.07 of that in percentage?
well 

solve for "x"
 
        
        
        
Answer:
A) 7x^3 + 13x^2 + 8x + 9
Step-by-step explanation:
(3x^2 + 2x + 7x^3) + (10x^2 + 6x + 9)
I like to line them up vertically
 7x^3 +3x^2 + 2x 
+       (10x^2 + 6x + 9)
-----------------------------------
7x^3 +13x^2 +8x +9
 
        
                    
             
        
        
        
Answer:
3/14
Step-by-step explanation:
There’s 14 marbles total and only 3 are orange