hvvrq $ulwkphwlf 6htxhqfhv dqg 6hulhv - NCPN
hvvrq $ulwkphwlf 6htxhqfhv dqg 6hulhv - NCPN
hvvrq $ulwkphwlf 6htxhqfhv dqg 6hulhv - NCPN
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Mixed Review<br />
Additional Answers<br />
35. a. 20, 22, 24, 26, 28<br />
b. S n<br />
= n 2 (20 + a ) n<br />
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Answers to Math<br />
Applications<br />
Math Applications for this<br />
chapter are on pages 422–429.<br />
The notes and solutions shown<br />
below accompany the suggested<br />
applications to assign with this<br />
lesson.<br />
4. a. 9,500 + 5,700 + 3,420<br />
+ 2,052 + 1,231.2 +<br />
738.72 + …<br />
b. a 1<br />
= 9,500; r = 5 , 700<br />
9,<br />
500<br />
= 0.6<br />
a 7<br />
= 9,500(0.6) 6<br />
= 443.232<br />
∞<br />
∑<br />
c. 9, 500( 06 . ) n<br />
n= 0<br />
14. a. infinite geometric series<br />
b. r = 3 1 = 3<br />
|3| ≥ 1, so the series<br />
diverge.<br />
c. Because the series diverges,<br />
it does not approach a<br />
particular sum.<br />
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−2<br />
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=<br />
3<br />
5 + 10 2 <br />
− 4<br />
5 15<br />
2 − 2<br />
= 2 −1<br />
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414 Chapter 9 Sequences and Series
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