Answer
$126$
Work Step by Step
The formula for combinations is given by
$$nC_r=\frac{n!}{r!(n-r)!}$$
Substitute $n=9,r=5$ in the above formula.
$\begin{aligned}9C_5&=\frac{9!}{5!(9-5)!}\\&=\frac{9!}{5!4!}\\9C_5&=126\end{aligned}$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 13, Trigonometric Ratios and Functions - 13.2 Define General Angles and Use Radian Measure - 13.2 Exercises - Mixed Review - Page 865: 70
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
