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anonymous
 5 years ago
Which of the coordinate pairs below is a solution to the following system of equations?
x2 + y2 = 157 x + y = 17
anonymous
 5 years ago
Which of the coordinate pairs below is a solution to the following system of equations? x2 + y2 = 157 x + y = 17

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darthsid
 5 years ago
Best ResponseYou've already chosen the best response.0I believe the general way of solving these kinds of equations is to substitute the values of the coordinate pair for x and y in the equation, and see if the two sides match up. For example, if one of the given coordinate pairs is (2,5) Then, we will substitute x = 2, and y = 5. So, the equation will become: 2^2 + 5^2 = 157*2 + 5 = 17 29 = 319 = 17 This is obviously not true, so (2,5) is not the solution

darthsid
 5 years ago
Best ResponseYou've already chosen the best response.0Try substituting x = 3 and y = 10 in your equation to find out!

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0First of all you have two = signs in here... is that correct?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Oh is it two equations. x^2 + y^2 = 157 AND x + y = 17

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Then the answer (x,y) will be where the x + y = 17 and the x^2 + y^2 = 17

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0sorry x^2 + y^2 = 157

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0no 30 Idk , i took a wild Guess of tha answer

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Oh.. I thought you had multiple choice.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0If you have to work it out... it is a bit of a long process... here we go.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0x + y = 17 y = 17  x we substitute that into the other equation. x^2 + y^2 = 157 x^2 + (17x)^2 = 157 x^2 + (17x)(17x) = 157 you foil the 17x x^2 + 289  17x  17x + x^2 = 157 2x^2  34x + 289 = 157 (add like terms) 2x^2  34x + 132 = 0 (make it = to 0) 2(x^2  17x + 66) = 0 take out gcf 2(x  11)(x  6) = 0 factor x  11 = 0 or x  6 = 0 x = 11 or x = 6 answers are (11,6) or (6,11)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Actually is is (11,6) AND (6,11) you are intersecting a circle with a line.. That would be two points.
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