Answer:
   (1, –5)
Step-by-step explanation:
It is relatively easy to try the offered solutions to see what works.
<u>(1, -5)</u>
   3(1) +10(-5) = -47 . . . true
   5(1) -7(-5) = 40 . . . true
(1, -5) is the solution
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As a check, you can try some of the other choices:
<u>(1, 5)</u>
   3(1) +10(5) ≠ -47
<u>(-1, -5)</u>
   3(-1) +10(-5) ≠ -47
<u>(-1, 5)</u>
   3(-1) +10(5) ≠ -47
None of the other choices works in the first equation, so they're not the solution.
 
        
             
        
        
        
I'm ASSUMING that we're talking about Three Ordered Ordered Pair Solutions. 
If so, the answer is (0,−1),(1,2),(2,5).
 
        
                    
             
        
        
        
Since there are 8 total, and 4 is the amount to find as a fraction, we simply divide 4 by 8 to get 4/8
        
             
        
        
        
Answer:
Solution 1: 1+1
Solution 2: 1-
Step-by-step explanation:
x^2-2=2x
x^2-2x-2=0
Use quadratic equation.
(-b+- )/2a
)/2a
(2+- )/2
)/2
(2+- )/2
)/2
(2+- )/2
)/2
Solution 1: (2+2 )/2=1+1
)/2=1+1
Solution 2: 1-
 
        
                    
             
        
        
        
You would have to divide 105 by 7 and get an answer then you times that answer by nine and get your answer