dodi00
Answered

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In an equation, y varies directly is a x varies. If y =86 when x=20, what is the value of x when y=129?​

Sagot :

tiffanylina18
x = 30
u can set it like 20/86
you can simply it to 10/43 (divide by 2)
u can then set 10/43 proportional to x/129
cross multiply and you get 30
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