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DedPeter [7]
2 years ago
5

Which equation shows a true proportion

Mathematics
1 answer:
Oduvanchick [21]2 years ago
8 0

Answer: the first equation is the answer.

Step-by-step explanation: As you can see the first equation is 5/7=15/21. The are proportional because 5*3=15 and 7*3=21. If they are multiplied or divided by the same number, then they are proportional. It does not work with adding, subtracting or flipping.

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There are some caps in a box. 1/6 of them are red, 1/3 are blue, and 3/7 of the remainder are green. If there are 27 green caps,
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\frac{1}{6}x+\frac{1}{3}x+\frac{3}{7}(x-(\frac{1}{6}x+\frac{1}{3}x))=x\\\frac{3}{7}(x-(\frac{1}{6}x+\frac{1}{3}x))=27\\\frac{3}{7}(x-(\frac{1}{2}x))=27\\\frac{3}{7}(\frac{1}{2}x)=27\\x=126

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3 years ago
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2 years ago
In circle P with mNRQ = 60°, find the angle measure of minor arc NQ
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Given:

m∠NRQ = 60°

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The angle measure of minor arc NQ

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The inscribed angle is half of the intercepted arc.

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$\Rightarrow 2 \times m\angle NRQ =2 \times \frac{1}{2} m(ar NQ)

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Substitute m∠NRQ = 60°.

$\Rightarrow 2\times 60^\circ=m(ar NQ)

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