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Earn +20 ptsQ: If 3x plus 9 equals 5 what is x?
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If 3x-5 equals 9 what is the value of x?
3x - 5 = 9 3x = 9 + 5 3x = 14 x = 14/3 or 4 2/3
3x-3 equals 2x plus 6?
3x - 3 = 2x + 6 3x = 2x + 9 x = 9
5x plus 4 - 3x plus 5 plus 2x - 9?
5x + 4 - 3x + 5 + 2x - 9 = 4x
What is the answer to -2x to the 4 plus 16 plus 2x to the 4 plus 9-3x to the 5?
-2x^4+16 +2x^4+9-3x^5=-3x^5+25. There is no "answer" because there is no equation.
Is 3x plus 2y equals 5 and 3x plus 2y equals 9 perpendicular or parallel?
We need to get both equations into slope-intercept form. If they are parallel, they will have the same slope. If they are perpendicular, they will have slopes that when multiplied equal -1. (unless one line is horizontal and the other vertical) 3x+2y=5 2y=5-3x y=(-3/2)x+(5/2) 3x+2y=9 2y=9-3x y=(-3/2)x+(9/2) The two lines are parallel, since both slopes are equal to (-3/2).
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