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zavuch27 [327]
3 years ago
13

Suppose that y varies inversely as x, and x=9 when y=15. Find the value for k and write the function. Group of answer choices La

TeX: k=\frac{15}{9} k = 15 9 k = 15 9 and LaTeX: y=\frac{9}{15}x y = 9 15 x y = 9 15 x LaTeX: k=\frac{15}{9} k = 15 9 k = 15 9 and LaTeX: y=\frac{15}{9x} y = 15 9 x y = 15 9 x LaTeX: k=135 k = 135 k = 135 and LaTeX: y=\frac{135}{x} y = 135 x y = 135 x LaTeX: k=135 k = 135 k = 135 and LaTeX: y=135x
Mathematics
1 answer:
Radda [10]3 years ago
8 0

Answer:

see explanation

Step-by-step explanation:

Given that y varies inversely as x then the equation relating them is

y = \frac{k}{x} ← k is the constant of variation

To find k use the condition that x = 9 when y = 15

15 = \frac{k}{9} ( multiply both sides by 9 )

k = 135

y = \frac{135}{x} ← equation of variation

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IceJOKER [234]
\bf 343^{\frac{2}{3}}+36^{\frac{1}{2}}-256^{\frac{3}{4}}\qquad \begin{cases}
343=7\cdot 7\cdot 7\\
\qquad 7^3\\
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256=4\cdot 4\cdot 4\cdot 4\\
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\\\\\\
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\\\\\\
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to see what you can take out of the radical, you can always do a quick "prime factoring" of the values, that way you can break it in factors to see who is what.
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