emilystartk
25.03.2020 •
Mathematics
Suppose x varies directly as y and x varies inversely as z. Find z when x= 10 and y= -7 if z= 20 when x= 6 and y= 14
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Ответ:
Z is -66.7
Step-by-step explanation:X =K(Y/Z) if x =10, y=-7, Z=20 substituting in the equation 10=K(-7/20) solving for K =-28.6
When x=6, Y=14, and K(constant)=-28.6
6=-28.6(14/Z) solving for Z by cross multiplication and dividing the product of -28.6 and 14 by 6 = - 66.7.
Ответ:
1 litre = 1000 millilitres so 9 litres = 9000 millilitres