In exercise 5.10, we proved that f(y1,y2) = is a valid joint probability density function for y1, the amount of pollutant per sample collected above the stack without the cleaning device, and y2. the amount collected above the stack with the cleaner. are the amounts of pollutants collected with and without the cleaning device independent?

x equals 1

step-by-step explanation:

f(4)=f(×)

x=1

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

c.)

step-by-step explanation: