The first one is A the second is C and the third is B
Using the together rate, it is found that it would take them 16 hours to sew 12 dresses.
<h3>What is the together rate?</h3>
The together rate is the <u>sum of each separate rate</u>.
In this problem, we have that:
Hence, the together rate is the time it would take them to produce one dress working together, and is given by:




Then one dress takes
of an hour, and the time for twelve dresses is:

It would take them 16 hours to sew 12 dresses.
To learn more about the together rate, you can take a look at brainly.com/question/25159431
Answer : Square root of 21 , -4 2/3, -30/7 , -31/6 .
Explanation :
-4 2/3 = -10/3 = -3.3333
Square root of 21 = 4.58258
-31/6 = -5.1666
-30/7 = 4.2857
And arrange them from greatest to least and there we have the answer.
Hope this helps you understand !!!!
The answer is neither because to be complementary they need to equal 90 degrees and to be supplementary the need to equal 180 degrees. The sum of the two angles equals 169 degrees.