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anonymous
 one year ago
If x varies inversely with y and x = 6 when y = 10, find y when x = 8.
A.y=4/15
B.y=4.8
C.y=7.5
D.y=40/3
anonymous
 one year ago
If x varies inversely with y and x = 6 when y = 10, find y when x = 8. A.y=4/15 B.y=4.8 C.y=7.5 D.y=40/3

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0WILL GIVE MEDAL TO THE BEST ANSWER

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0varies inversely means as one goes up the other goes down the product is constant

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Do the same we did before. Start here. \(x = \dfrac{k}{y} \)

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0dw:1436064412037:dw

ybarrap
 one year ago
Best ResponseYou've already chosen the best response.0x varies inversely with y means x=k/y Where k is a constant You know that 6=k/10 Solve for k Then plug into the original equation and set x=8 and solve for y. Does this make sense?

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0dw:1436064517051:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0is the set up this 6=k/10

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Now replace x and y with the given values. Then solve for k.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so then wouldn't it be 60

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1\(x = \dfrac{k}{y} \) \(6 = \dfrac{k}{10} \) You are correct.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Now write the inverse relation using the value k = 60.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1\(x = \dfrac{60}{y} \) Now we use x = 8 and we find y: \(8 = \dfrac{60}{y} \) \(8y = 60\) \( y = 7.5\)
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