## Quiz Information

Login / Sign Up to View Document

## Sample Document Text

MTH 120 - Summer - 2005
Essex County College - Division of Mathematics
Quiz # 31 - Printed May 16, 2005
Name:
Signature:
Show all work clearly and in order, and box your final answers. Justify your answers algebraically
whenever possible. You have 20 minutes to take this 10 point quiz. When you do use your
calculator, sketch all relevant graphs and write down all relevant mathematics.
1. Find the numerical coefficient of the term whose variable part is x6y3 in the expansion of
(x ? 2y)9 .
Solution: parenleftbigg
9
6
parenrightbigg
(x)6 (?2y)3 = 84 · (?8)x6y3 = ?672x6y3
So, the numerical coefficient is ?672 .
2. Convert each of the following angle measures to radian measure.
(a) 60? =
Solution:
60? = 60? ·
parenleftBig pi
180?
parenrightBig
= pi3
(b) 90? =
Solution:
90? = 90? ·
parenleftBig pi
180?
parenrightBig
= pi2
(c) 50? = Solution:
50? = 50? ·
parenleftBig pi
180?
parenrightBig
= 5pi18
1This document was prepared by Ron Bannon using LATEX2?.
1
...

© Copyright 2019 , Koofers, Inc. All rights reserved.

The information provided on this site is protected by U.S. and International copyright law, and other applicable intellectual property laws, including laws covering data access and data compilations. This information is provided exclusively for the personal and academic use of students, instructors and other university personnel. Use of this information for any commercial purpose, or by any commercial entity, is expressly prohibited. This information may not, under any circumstances, be copied, modified, reused, or incorporated into any derivative works or compilations, without the prior written approval of Koofers, Inc.