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jeka94
3 years ago
7

If I buy 19 bikes for 770$ how much would 11 bikes cost?

Mathematics
1 answer:
ddd [48]3 years ago
5 0

Answer: $445.83

Step-by-step explanation:

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find the point-slope equation of the line perpendicular to the line y=2x+5 passing through the point (1,4). (please include solu
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First off, let's keep in mind that perpendicular lines have negative reciprocal slopes, hmmm so what's the slope of y = 2x + 5?

well, notice, that equation is in slope-intercept form, thus   \bf y=\stackrel{slope}{2}x+5.

\bf \stackrel{\textit{perpendicular lines have \underline{negative reciprocal} slopes}}
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so, we're really looking for the equation of a line whose slope is -1/2 and runs through 1,4.

\bf (\stackrel{x_1}{1}~,~\stackrel{y_1}{4})\qquad \qquad \qquad 
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% point-slope intercept
\stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}\implies y-4=-\cfrac{1}{2}(x-1)
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