Mr. lewis is going on a trip. he has 11 books that he hasn't read yet, but he wants to bring only 2 on the trip. in how many ways can he choose 2 books to bring on the trip?

Step-by-step explanation:you answer is 55 any other help look up a Permutations and Combinations or spam me and ill help again correction you and multiply the 11 by 10 first then divide by 2 you will still get 55.

b. 24 mm

step-by-step explanation:

use the pythagorean theorem.

a^2 + b^2 = c^2

a^2 + 7^2 = 25^2

a^2 + 49 = 625

a^2 = 576

a = 24

answer: b. 24 mm