If a 10-pound turkey cost $20.42 how much does a 21-pound turkey cost

First divide $20.42 by 10 to find the cost of 1 pound/16 ounce turkey.

Dividing, this gives us 2.042.

Now, to find the cost of a 21-pound turkey, we multiply

the cost of 1 turkey by 21 to get 42.882.

So a 21-pound turkey is $42.882.

sin3a=12/15

step-by-step explanation:

since one side was multiplied by 3 the other side must also be multiplied by 3.

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