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Burka [1]
3 years ago
11

A circle with circumference12 has an arc with a 330∘ degree central angle. What is the length of the arc?

Mathematics
1 answer:
posledela3 years ago
4 0
The formula for arc length which is measured in units not degrees is \frac{ \beta }{360} *2 \pi r, where 2 pi r is the circumference.  We were given the circumference as 12 pi, so we can fill in the rest of the formula and the find the length of the arc that is intercepted by that 330° angle.  \frac{330}{360} *12 \pi gives us, after multiplying in the pi, an arc length of 34.56 units.
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y - 2 = -3(x + 5)

that is the equation of your line. however, if you want to graph it, this doesn't really make much sense to you. convert it to slope-intercept form, y = mx + b, by solving for y.

y - 2 = -3(x + 5) ... distribute -3
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to graph this, and any other y = mx + b equation, you want to start with your y-intercept if it's present. your y intercept here is -13, which means the line you wasn't to graph crosses the y-axis at y = -13, or (0, -13). put a point there.

after you've plotted that point, you use your slope to graph more. remember that your slope is "rise over run"--you rise up/go down however many units, you run left/right however many units. if your slope is -3, you want to go down 3 units, then go to the right 1 unit. remember that whole numbers have a 1 beneath them as a fraction. -3/1 is your rise over 1.
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3 years ago
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Step-by-step explanation:

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tankabanditka [31]

Answer:

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We simplify left and right side of the equation.  

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then divide both sides of the equation by 1 to get x.  

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Answer:

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