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Earn +20 ptsQ: What does x equal when 21x plus 9 equals 180?
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What is the answer to 20x plus 5-20 equals 21x plus 4?
20x + 5 - 20 = 21x + 4 -x = 4 + 15 x = -19
How does y equals 4x2 plus 21x look in a graph?
It is a parabola with its vertex at the origin and the arms going upwards.
7x plus 7 equals 28 x equals?
7x+7=28x 28x-7x=7 21x=7 x=3
Is 7x plus 2y equals 16 and -21x-6y equals 24 a no solution?
Multiplying the first equation by -3 gives -21x - 6y = -48 but the other equation gives 24 as the value of the same expression, so you are correct, there is no solution
What is the factored form of y equals 3x plus 21x squared?
y = 3x + 21x2 = 3x(1 + 7x)
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