It is given that y varies inversely as x varies. If x = 8 and y=6, what is the value of y when x = 4?

Thevalue of y when x is 4 is 12

If y varies inversely as x, this is expressed as;

If x = 8 and y=6

k = xy

k = 8 * 6

k = 48

To get the value of y when x = 4

y = k/x

y = 48/4

y = 12

Hence the value of y when x is 4 is 12

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y = 12

Step-by-step explanation:

set up equation for 'y varies inversely with x':  y = k/x

where 'k' is the constant of variation

8 = k/6

therefore, k = 48

value of y when x = 4:  y = 48/4; therefore, y = 12

the total estimated nappy use.=10,500,000

step-by-step explanation:

given that on an average the average baby uses 3528 napkins.

in a particular year 2014, the number of births were 299697 in new south wales.

rounding off the number of births to the nearest hundred thousand we have

no of birtsh = 300000

also rounding off the average usage to nearst thousand we get

average use of a baby = 3500

hence total number of nappy estimated to be used = 3500x300000

= 10,500,000

answer is 10,500,000 nappies

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step-by-step explanation: