They are equal. 2/5 is 4/10.
 
        
             
        
        
        
Time taken by Ria to paint a room = 4 hours 
Time taken by Destiny to paint a room = 6 hours
If they work together, they complete 1 job. So,

The LCD of 4 and 6 is 12




Hence, both of them can paint the room in  hours or 2.4 hours.
 hours or 2.4 hours.
 
        
                    
             
        
        
        
Answer:
x=3,y=7
Step-by-step explanation:
8x+3y=45
2x+3y=27
8x-2x=6x
45-27=18
<u>6</u><u>x</u><u>=</u><u>1</u><u>8</u>
 6. 6 
 x=3
2x+3y=27
2(3)+3y=27
6+3y=27
3y=27-6
<u>3</u><u>y</u> = <u>2</u><u>1</u>
3. 3
 y=7
 
        
             
        
        
        
Answer:
13
Step-by-step explanation:
a = 3
b = -2
a² + b² = 3² + (-2)²
 = 9 + 4
 = 13