2x + y = 3 x - 2y = -1 If equation two is multiplied by -2 and then the equations are added, the result is what?
1 answer:
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Answer:
Looking at the graphic, if a 45-45-90 triangle has a hypotenuse of 1, then each of the side lengths equal 1 / square root (2)
Source: https://www.1728.org/trig2.htm
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