Test
How many different committees with 4 members can be formed from a group of 9 students? (Order is not important.)

Using the combination formula, the number of different committees with 4 members that can be formed from a group of 9 students and order is not important, would be: 9C4 = 126

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isaiah walks 3 miles due north, turns and then 5 miles due east. how far is he from his starting point?

a^2 + b^2 = c^2

let c = distance from starting point.

(3)^2 + (5)^2 = c^2

9 + 25 = c^2

34 = c^2

sqrt{34} = sqrt{c^2}

sqrt{34} = c