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astraxan [27]
2 years ago
12

What is the reciprocal of 5 3/4 ? 3 4/5 4/23 5 4/3 23/4

Mathematics
1 answer:
artcher [175]2 years ago
8 0

Answer:

23/4

Step-by-step explanation:

5 x 4 = 20

20 + 3 = 23

23/4

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If y varies inversely with the square of r, what is the constant of proportionality when y - 10 and 1 = 5?
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<em><u>Question:</u></em>

If y varies inversely with the square of r, what is the constant of proportionality when y =10 and r = 5?

<em><u>Answer:</u></em>

The constant of proportionality is 250

<em><u>Solution:</u></em>

Given that,

y varies inversely with the square of r

Which means,

y \propto \frac{1}{r^2}\\\\y = k \times \frac{1}{r^2}

Where, "k" is constant of proportionality

Subtitute y = 10 and r = 5

10 = k \times \frac{1}{5^2}\\\\10 = k \times \frac{1}{25}\\\\k = 10 \times 25\\\\k = 250

Thus the constant of proportionality is 250

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