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katrin2010 [14]
3 years ago
14

Ahmad, Barry, and Tara collected some seashells. Ahmad collected 1/6 of the seashells, Barry collected 1/2 of the seashells, and

the rest were collected by Tara. Tara received 76 seashells. How many seashells do they have altogether?
Mathematics
1 answer:
lawyer [7]3 years ago
6 0
First you get figure out that Tara must have 1/3 of the shells from the other two ratios. Then you learn that 76 is 1/3 of the shells, therefore there must be 76*3 or 228 shells total.
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Angle of rotational symmetry = Central angle of a polygon

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Therefore, central angle of a polygon with 15 sides = \frac{360}{15}

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Central angle tells us that after every 24° of rotation, polygon overlaps itself.

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