Ahandful of chewing gum contains 5 red pieces out of 11. what is the probability that a randomly selected
piece of gum is not red?

Find the number of pieces that aren't red, by subtracting the red from the total:

11 - 5 = 6 are not red.

The probability is the number of none red, over the total number of pieces: 6/11

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