Answer:
24
Step-by-step explanation:
The cosine of an acute angle in a right triangle is the ratio of the length of the adjacent side to the length of the hypotenuse.

A possible answer could be 13 multiplied by 3, or maybe 39 by 1. I don't really know how to explain how I got my answer, but I hope that this helped you out! :)
Answer:
11
Step-by-step explanation:
6^2 = 6 x 6 = 36
5^2 = 5 x 5 = 25
36 - 25 = 11
Read method 2 of the article to understand how to do it:
https://www.wikihow.com/Balance-Chemical-Equations
Answer:
10
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Explanation:
10 is closer to 14 than 20 and 14 is between 10 and 20, so you can only compare between 10 and 20.