4 years ago

Solve..... 2(3-p) - 17 = 30

Mathematics

1 answer:

KatRina [158]4 years ago

5 0

See the step by step

Answer P:-20.5

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The graph of the equation y=−5x+b goes through the point A(5, −2). Find the value of b.

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$\bf y=-5x+b\impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array}\qquad \qquad \stackrel{therefore}{m=-5} \\\\[-0.35em] ~\dotfill\\\\$

$\bf A(\stackrel{x_1}{5}~,~\stackrel{y_1}{-2})~\hspace{10em} slope = m\implies -5 \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-(-2)=-5(x-5)\implies y+2=-5x+25 \\\\\\ y=-5x+25-2\implies y=-5x+\stackrel{\stackrel{b}{\downarrow }}{23}$

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3 years ago

Why is it not possible to divide by zero

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Answer:

In mathematics, division by zero is division where the divisor (denominator) is zero. Such a division can be formally expressed as a/0 where a is the dividend (numerator). In ordinary arithmetic, the expression has no meaning, as there is no number which, multiplied by 0, gives a (assuming a≠0), and so division by zero is undefined.

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Read 2 more answers

3x - 6 = 18 <br>solve for x

mr Goodwill [35]

Answer:

x=8

Step-by-step explanation:

You move all terms that don't contain x to the right side and solve.

3x-6=18

3x=24

x=8