21-07-2016
Mathematics

Answered

The quantity y varies directly as x and inversely as z. When x is 10 and z is 4, y is 15. What is y when x is 20 and z is 6?

Verified Answer :

apologiabiology apologiabiology

21-07-2016

y=(kx)/z

15=(k10)/4
15=(5k/2)
15=k(5/2)
ties both sides by 2/5 to clear fraction
6=k

y=(6x)/z

x=20
z=6
y=(6*20)/6
y=20

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cambriaseamons cambriaseamons

08-12-2021

Answer:

B: y=20 is correct

Step-by-step explanation:

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