Are awarded for first, second, and At a competition with 7 runners, medals
to
third places. Each of the 3 medals is different. How many ways are there to
award the medals?
Decide if this is a
permutation or a combination, and find the number of ways
to award the medals.

C. Permutation; number of ways = 210

b

step-by-step explanation:

b) k’(6, 4); l’(3, 3)

step-by-step explanation:

a 270° clockwise rotation maps every point (x, y) to (y, -x). (it negates the x-coordinate and then switches it and the y-coordinate.)

this means the endpoints of the side congruent to kl, k' and l', would be mapped as:

k'(-4, 6)→(6, 4)

l'(-3, 3)→(3, 3)