I really need help with questions 12, if you would like it would be really helpful if you can explain how you got the answer as well, thank you so much!

160 pieces

Step-by-step explanation:

1. Convert each mixed number into an improper fraction

4 4/5 = 24/5

2. Convert to the least common denominator. In this case, the least common denominator would be 10. Since the denominator in 24/5 is 5, multiply this fraction by 2/2 to get the denominator to equal 10.

24/5 * 2/2 = 48/10

3. Divide 48/10 by 3/10, using the keep, change, flip method

48/10 * 10/3

Multiply the numerators and denominators together, respectively.

480/3

4. Simplify

480/3 = 160

There are 160 pieces.

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.

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