Chapter 9

College Algebra with Corequisite Support · 362 exercises

Problem 25

For the following exercises, write a recursive formula for each geometric sequence. \(a_{n}=\\{-32,-16,-8,-4, \ldots\\}\)

4 step solution

Problem 25

For the following exercises, find the specified term given two terms from an arithmetic sequence. \(a_{3}=-17.1\) and \(a_{10}=-15.7\) Find \(a_{21}\).

3 step solution

Problem 25

For the following exercises, write an explicit formula for each sequence. \(1,-\frac{1}{2}, \frac{1}{4},-\frac{1}{8}, \frac{1}{16}, \ldots\)

4 step solution

Problem 26

For the following exercises, one card is drawn from a standard deck of 52 cards. Find the probability of drawing the following: A club

6 step solution

Problem 26

For the following exercises, use the Binomial Theorem to write the first three terms of each binomial. $$ (x-2 y)^{8} $$

5 step solution

Problem 26

For the following exercises, find the number of subsets in each given set. $$ \\{a, b, c, \ldots, z\\} $$

5 step solution

Problem 26

For the following exercises, use the following scenario. Javier makes monthly deposits into a savings account. He opened the account with an initial deposit of \(\$ 50\). Each month thereafter he increased the previous deposit amount by \(\$ 20\). Graph the arithmetic sequence showing one year of Javier's deposits.

4 step solution

Problem 26

For the following exercises, write a recursive formula for each geometric sequence. \(a_{n}=\\{14,56,224,896, \ldots\\}\)

3 step solution

Problem 26

For the following exercises, use the recursive formula to write the first five terms of the arithmetic sequence. $$ a_{1}=39 ; \quad a_{n}=a_{n-1}-3 $$

6 step solution

Problem 26

For the following exercises, write the first five terms of the sequence. \(a_{1}=9, \quad a_{n}=a_{n-1}+n\)

5 step solution

Problem 27

For the following exercises, one card is drawn from a standard deck of 52 cards. Find the probability of drawing the following: A two

5 step solution

Problem 27

For the following exercises, use the Binomial Theorem to write the first three terms of each binomial. $$ (3 a+b)^{20} $$

6 step solution

Problem 27

For the following exercises, find the number of subsets in each given set. A set containing 5 distinct numbers, 4 distinct letters, and 3 distinct symbols

3 step solution

Problem 27

For the following exercises, use the following scenario. Javier makes monthly deposits into a savings account. He opened the account with an initial deposit of \(\$ 50\). Each month thereafter he increased the previous deposit amount by \(\$ 20\). Graph the arithmetic series showing the monthly sums of one year of Javier's deposits.

5 step solution

Problem 27

For the following exercises, write a recursive formula for each geometric sequence. \(a_{n}=\\{10,-3,0.9,-0.27, \ldots\\}\)

3 step solution

Problem 27

For the following exercises, use the recursive formula to write the first five terms of the arithmetic sequence. $$ a_{1}=-19 ; \quad a_{n}=a_{n-1}-1.4 $$

7 step solution

Problem 27

For the following exercises, write the first five terms of the sequence. \(a_{1}=3, \quad a_{n}=(-3) a_{n-1}\)

5 step solution

Problem 28

For the following exercises, one card is drawn from a standard deck of 52 cards. Find the probability of drawing the following: Six or seven

5 step solution

Problem 28

For the following exercises, use the Binomial Theorem to write the first three terms of each binomial. $$ (2 a+4 b)^{7} $$

5 step solution

Problem 28

For the following exercises, find the number of subsets in each given set. The set of even numbers from 2 to 28

4 step solution

Problem 28

For the following exercises, use the geometric series \(\sum_{k=1}^{\infty}\left(\frac{1}{2}\right)\). Graph the first 7 partial sums of the series.

4 step solution

Problem 28

For the following exercises, write a recursive formula for each geometric sequence. \(a_{n}=\\{0.61,1.83,5.49,16.47, \ldots\\}\)

3 step solution

Problem 28

For the following exercises, write the first five terms of the sequence. \(a_{1}=-4, \quad a_{n}=\frac{a_{n-1}+2 n}{a_{n-1}-1}\)

5 step solution

Problem 29

For the following exercises, one card is drawn from a standard deck of 52 cards. Find the probability of drawing the following: Red six

5 step solution

Problem 29

For the following exercises, use the Binomial Theorem to write the first three terms of each binomial. $$ \left(x^{3}-\sqrt{y}\right)^{8} $$

5 step solution

Problem 29

For the following exercises, find the number of subsets in each given set. The set of two-digit numbers between 1 and 100 containing the digit 0

3 step solution

Problem 29

For the following exercises, write a recursive formula for each geometric sequence. \(a_{n}=\left\\{\frac{3}{5}, \frac{1}{10}, \frac{1}{60}, \frac{1}{360}, \ldots\right\\}\)

5 step solution

Problem 29

For the following exercises, write the first five terms of the sequence. \(a_{1}=-1, \quad a_{n}=\frac{(-3)^{n-1}}{a_{n-1}-2}\)

6 step solution

Problem 30

For the following exercises, one card is drawn from a standard deck of 52 cards. Find the probability of drawing the following: An ace or a diamond

4 step solution

Problem 30

For the following exercises, find the indicated term of each binomial without fully expanding the binomial. The fourth term of \((2 x-3 y)^{4}\)

5 step solution

Problem 30

For the following exercises, find the distinct number of arrangements. The letters in the word "juggernaut"

5 step solution

Problem 30

For the following exercises, find the indicated sum. \(\sum_{a=1}^{14} a\)

4 step solution

Problem 30

For the following exercises, write a recursive formula for each geometric sequence. \(a_{n}=\left\\{-2, \frac{4}{3},-\frac{8}{9}, \frac{16}{27}, \ldots\right\\}\)

3 step solution

Problem 30

For the following exercises, write the first five terms of the sequence. \(a_{1}=-30, \quad a_{n}=\left(2+a_{n-1}\right)\left(\frac{1}{2}\right)^{n}\)

5 step solution

Problem 31

For the following exercises, one card is drawn from a standard deck of 52 cards. Find the probability of drawing the following: A non-ace

4 step solution

Problem 31

For the following exercises, find the indicated term of each binomial without fully expanding the binomial. The fourth term of \((3 x-2 y)^{5}\)

5 step solution

Problem 31

For the following exercises, find the distinct number of arrangements. The letters in the word "academia"

5 step solution

Problem 31

For the following exercises, find the indicated sum. \(\sum_{n=1}^{6} n(n-2)\)

3 step solution

Problem 31

For the following exercises, write a recursive formula for each geometric sequence. \(a_{n}=\left\\{\frac{1}{512},-\frac{1}{128}, \frac{1}{32},-\frac{1}{8}, \ldots\right\\}\)

3 step solution

Problem 31

For the following exercises, write the first eight terms of the sequence. \(a_{1}=\frac{1}{24}, \quad \mathrm{a}_{2}=1, \quad a_{n}=\left(2 a_{n-2}\right)\left(3 a_{n-1}\right)\)

8 step solution

Problem 32

For the following exercises, one card is drawn from a standard deck of 52 cards. Find the probability of drawing the following: A heart or a non-jack

7 step solution

Problem 32

For the following exercises, find the indicated term of each binomial without fully expanding the binomial. The third term of \((6 x-3 y)^{7}\)

5 step solution

Problem 32

For the following exercises, find the distinct number of arrangements. The letters in the word "academia" that begin and end in "a"

5 step solution

Problem 32

For the following exercises, find the indicated sum. \(\sum_{k=1}^{17} k^{2}\)

6 step solution

Problem 32

For the following exercises, write the first five terms of the geometric sequence. \(a_{n}=-4 \cdot 5^{n-1}\)

6 step solution

Problem 32

For the following exercises, write a recursive formula for each arithmetic sequence. $$ a=\\{-15,-7,1, \ldots\\} $$

4 step solution

Problem 32

For the following exercises, write the first eight terms of the sequence. \(a_{1}=-1, \quad \mathrm{a}_{2}=5, \quad a_{n}=a_{n-2}\left(3-a_{n-1}\right)\)

8 step solution

Problem 33

For the following exercises, two dice are rolled, and the results are summed. Construct a table showing the sample space of outcomes and sums.

5 step solution

Problem 33

For the following exercises, find the indicated term of each binomial without fully expanding the binomial. The eighth term of \((7+5 y)^{14}\)

6 step solution

Problem 33

,#,#,@,@,\$,\$,\$,\%,\%,\%,\% # For the following exercises, find the distinct number of arrangements. The symbols in the string #,#,#,@,@,\$,\$,\$,\%,\%,\%,\%

6 step solution

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