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OpenStudy (anonymous):
rtyry
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OpenStudy (anonymous):
D
OpenStudy (anonymous):
- 5x - 2y + 10x + 4y = - 7 + 14 2y = 7 - 5x y = 3.5 - 2.5x 5x + 2(3.5 - 2.5x) = 7 5x + 7 - 5x = 7 0 = 0 Answer: infinitely many solutions
OpenStudy (anonymous):
5x + 2y = 7 ----- times 2 10x + 4y = 14 10x + 4y = 14 10x + 4y = 14 ------------- this equations are the same, therefore you can't solve it, since you have only one equation and two variables.
OpenStudy (anonymous):
so it is D, because any number of solutions would fit as long as x varies indirectly to y
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