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.

the answer is 24

step-by-step explanation:

center (1,3) with radius 6

step-by-step explanation:

we must complete the square to find the center and radius of the circle.

first make sure the x and y squared terms have 1 as their coefficients. we also make sure x and y terms together.

we now create space between the x and y terms with parenthesis.

we complete the square by taking the middle terms -2x and the -6y - divide each and square them.

we add the squares to both sides.

simplify.

and write the quadratics in factored form.

the center is (h,k) or (1,3). the radius is the square root of 36 which is 6.