The variable z is inversely proportional to x. when x is 5, z has the value 0.8. what is the value of z when x= 12?

Given that, the variable z is inversely proportional to x.

So, we can set up an equation as following:

z * x = k Where k is constant of variation.

Also given that, when x = 5 then z =0.8.

Next step is to plug in these values in the above equation to get the value of k.

So, 0.8 * 5 =k

k = 4

So, the equation become : z* x = 4.

Now we need to find the vaue of z when x=12. Hence,

z * 12 = 4

z = Divided each sides by 12 t isolate z.

z = 0.3 Rounded to tenth.

So, z= 0.3

Hope this helps you !

to find the total number of combinations, multiply the quantity of each item by each other:

2 pairs of shoes x 3 pairs of shorts = 6 different combinations.

answer: 80,000

step-by-step explanation:

the population doubles every day.

10,000*2=20,000 day 4

20,000*2=40,000 day 5

40,000*2=80,000 day 6