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Dafna11 [192]
3 years ago
12

What is the value of the constant in the expression? 2x2 + 3x - y - 18 + 7y2

Mathematics
1 answer:
Virty [35]3 years ago
8 0
I think it’s 3x

Hope it helps
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Consider the line 5x-8y=8 what is the slope of a line perpendicular to this line what is the slope of a line parallel to this li
Sophie [7]

\text{Let}\ k:y=m_1x+b_1\ \text{and}\ l:y=m_2x+b_2,\ \text{then}\\\\l\ \perp\ k\iff m_1m_2=-1\to m_2=-\dfrac{1}{m_1}\\\\l\ \parallel\ k\iff m_1=m_2\\\\\text{Convert the equation to the slope-intercept form}\ y=mx+b.\\\\5x-8y=8\qquad\text{subtract}\ 5x\ \text{from both sides}\\\\-8y=-5x+8\qquad\text{divide both sides by (-8)}\\\\y=\dfrac{5}{8}x-1\to m_1=\dfrac{5}{8}\\\\perpendicular:\ m_2=-\dfrac{1}{\frac{5}{8}}=-\dfrac{8}{5}\\\\parallel:\ m_2=\dfrac{5}{8}

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3 years ago
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Ahat [919]

The correct answer is (C). The sample is a subset of the population, and the parameter is a characteristic of the population of interest.

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Solve the equation x/4+3=-6
charle [14.2K]
X/4 = -9

x/4 = -9/1

cross multiply 

x = -36
3 0
3 years ago
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