Evaluate y5 + x(-7)
When x = 2, y = -5
       
      
                
     
    
    
    
    
    1 answer:
            
              
              
                
                
Answer:
45
Step-by-step explanation:
OK, first we turn the variables into into the actual values:
The equation will look like this: 
(2)5 + (-5)(-7) 
Now its easier to solve!  Lets solve (2)5!
2 * 5 = 10
The equation looks like:
 10 + (-5)(-7)   
 We will also solve (-5)(-7). Remember that a negative number times a negative number is positive!
-5 * -7 = 35
Lets finish the rest:
10 + 35 = 45.           
Hope this is correct and have a nice day!       
 
                                
             
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Answer:
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Step-by-step explanation:
X=-11 because,
Step 1: Simplify both sides of the equation.
x
2
+
4
x
=
77
Step 2: Subtract 77 from both sides.
x
2
+
4
x
−
77
=
77
−
77
x
2
+
4
x
−
77
=
0
Step 3: Factor left side of equation.
(
x
−
7
)
(
x
+
11
)
=
 
        
             
        
        
        
X = # of perfomances
y = total amount of money
Income: y = 7500x
Expense: y = 5900x + 88000
Substitution:
7500x = 5900x + 88000
1600x = 88000
x = 55
y = 7500(55) = $412,500
55 performances are needed to break-even.
        
             
        
        
        
Answer:
Yes it is true and 4 mark not ture
Step-by-step explanation:
 
        
             
        
        
        
A) 1.75p + 12 = 54
 1.75p = 42
 p = 24 bags
b) 1.75(70) + 12 = b
 122.5 + 12 = b
 b = $134.50