(m^2 - 16n^2) / [(3m+12n)/mn] Answer appears to be correct: mn(m - 4n)/3 for

I can't figure out the limitation -- tried m≠0, n≠0, m≠-4n and shows as incorrect. Also tried m≠0, n≠0 and just m≠4n. Shows as incorrect. Help would be very much appreciated!

All four restrictions apply:

m not= 0

n not= 0

m not= -4n

n not= m/-4

Step-by-step explanation:

For a rational expression, any expression that is a denominator AT ANY POINT in the calculation, must have the appropriate restrictions applied. There are two different expressions, mn and m+4n that we are concerned about here. See image. All four restrictions must be applied.

the answer is simply just 6n add the two together as they have an n

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