Step 1: subtract x from -3. New equation should be y=-3-x. 
Step 2: plug that equation into top equation. Should be 5x + 2(-3-x) = 9. 
Step 3: use distribitive properties on 2(-3-x). New equation is 5x - 6 - 2x = 9. 
Step 4: combine like terms. New equation 3x - 6 = 9. 
Step 5: work it out. Divide 3x and 9 by 3. New equation is x - 6 = 3. Add 6 to -6 and 9. Final eqaution is x = 9. 
Step 6: swap 9 for x in second equation. New equation is 9 + y = -3
Step 7: subtract 9 from 9 and -3. New equation is y = -12
: = = -
        
             
        
        
        
Answer:
6 cm
Step-by-step explanation:
 Vcuboid  = lwh
⇒ h = Vcuboid ÷ lw
∴  h = 540 cm³ ÷ 90 cm²
⇒ h = 6 cm 
 
        
             
        
        
        
Answer:
525168
Step-by-step explanation:
48528×3647÷(286+51)
parenthesis first 
48528×3647÷ 337
calculate the expression 
525168
 
        
                    
             
        
        
        
Your range is 8
take your largest minus the smallest
8-0=8
hope this helps
        
                    
             
        
        
        
=153/300
=.51
The probability is .51 or 153/300