Answer:
The answer to your question is  x² + 5/2x - 3/2 = 0
Step-by-step explanation:
Data
Quadratic equation           x² + 2.5x - 1.5 = 0
Process
1.- Convert the decimals into fractions
2.5 = 25/10 = 5/2
1.5 = 15/10 = 3/2
2.- Substitution
                                        x² + 5/2x - 3/2 = 0
3.- Conclusion
I rewrite the equation, now it is expressed in fractions. It could be solve by factoring. 
 
        
             
        
        
        
Answer:
86%
Step-by-step explanation:
<u>430</u><u> </u> × <u>100</u> = <u>430</u> = 86%
500 1 5
you are going to cancel. 100 divided by 100 leaves 1. 500 divided by 100 is 5. 
430×1= 430. 5×1=5. divide 430 by 5 and you"ll get 86.
 
        
                    
             
        
        
        
Answer:
18.15
Step-by-step explanation:
55% = 55/100
33 = 33/1
33/1 x 55/100
33 x 55 = 1815
1 x 100 = 100
1815/100 = 18.15
 
        
             
        
        
        
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