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Vitek1552 [10]
3 years ago
12

Simplify an expression for the perimeter of the equilateral triangle shown below, in centimeters.

Mathematics
1 answer:
lidiya [134]3 years ago
5 0

Answer. :1.75x-2

Step-by-step explanation:

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Write the slope-intercept form of the line that has a slope of 2 and intersects the line, 2X - 3Y = 6 at X = 3
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so these two lines intersect at x = 3 hmmmm what's the y-coordinate of the second line at that point?

\bf 2x-3y=6\implies \stackrel{\textit{using x = 3}}{2(3)-3y=6}\implies 6-3y=6\implies -3y=0\implies y=0

so the y-coordinate of that second line is 0, so the point there is (3, 0) then.

so the first line is, a line that has a slope of 2 and passes through (3, 0).


\bf (\stackrel{x_1}{3}~,~\stackrel{y_1}{0})~\hspace{10em} slope = m\implies 2 \\\\\\ \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-0=2(x-3)\implies y=2x-6

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3 years ago
How to convert 264 yds/1 s to mi/day?
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Answer:

12,960\ \frac{miles}{day}

Step-by-step explanation:

we know that

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To convert yards to miles multiply by 1/1,760

1\ hour=3,600\ seconds

1\ day=24\ hours

so

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In this problem we have

264\ \frac{yd}{sec} =264\ \frac{(1/1,760)}{(1/86,400)}=264\ (\frac{86,400}{1,760})=12,960\ \frac{miles}{day}

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radius is half the diameter of a cylinder

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