X^2 + y^2 = 8
 X-y=0 so x = y
replace x = y into X^2 + y^2 = 8
y^2 + y^2 = 8
2y^2 = 8
y^2 = 8/2
y^2 = 4
y = - 2 and y = 2
because x = y
so x = - 2 and x = 2
solutions: 
x= - 2 and x = + 2
y= - 2 and y = + 2
 
        
             
        
        
        
Answer:
p = 23       and p = -22
Step-by-step explanation:
| 2p -1 | =45
Absolute value equations have 2 solutions, one positive value and one negative
2p-1 = 45    and 2p-1 = -45
Add 1 to all sides
2p-1+1 = 45+1    and 2p-1+1 = -45+1
2p = 46                        2p = -44
Divide by 2
2p/2 = 46/2    and   2p/2  = -44/2
p = 23       and p = -22
 
        
                    
             
        
        
        
Answer:
B. 15
Step-by-step explanation:
Prime factors of 15 is 3 and 5
sum of 3 and 5 is 8
 
        
                    
             
        
        
        
Answer
Example 1 Solve for x and check: x + 5 = 3
Solution
Using the same procedures learned in chapter 2, we subtract 5 from each side of the equation obtaining
Example 2 Solve for x and check: - 3x = 12
Solution
Dividing each side by -3, we obtain
Step-by-step explanation: here is your anserw the let me know if it right 
 
        
             
        
        
        
Answer:
 
Step-by-step explanation:
<em>d = 52°</em> 
<em>e = 77°</em> 
<em>f </em>= 180° - ( 52° + 77° ) =<em> 51°</em>