Chapter 1
Algebra for College Students · 342 exercises
Problem 13
Perform the following operations with real numbers. $$(-56) \div(-4)$$
4 step solution
Problem 13
From the list \(0,14, \frac{2}{3}, \pi, \sqrt{7},-\frac{11}{14}\), \(2.34,3.2 \overline{1}, \frac{55}{8},-\sqrt{17},-19\), and \(-2.6\), identify each of the following. The rational numbers
5 step solution
Problem 14
Simplify the algebraic expressions in Problems \(1-14\) by combining similar terms. $$8 x y^{2}-5 x^{2} y+2 x y^{2}+7 x^{2} y$$
4 step solution
Problem 14
State the property that justifies each of the statements. For example, \(3+(-4)=(-4)+3\) because of the commutative property of addition. $$\left(\frac{3}{4}\right)\left(\frac{4}{3}\right)=1$$
4 step solution
Problem 14
Perform the following operations with real numbers. $$(-81) \div(-3)$$
4 step solution
Problem 14
From the list \(0,14, \frac{2}{3}, \pi, \sqrt{7},-\frac{11}{14}\), \(2.34,3.2 \overline{1}, \frac{55}{8},-\sqrt{17},-19\), and \(-2.6\), identify each of the following. The integers
3 step solution
Problem 15
Simplify the algebraic expressions in Problems \(15-34\) by removing parentheses and combining similar terms. $$3(x+2)+5(x+3)$$
2 step solution
Problem 15
Simplify each numerical expression. Be sure to take advantage of the properties whenever they can be used to make the computations easier. $$36+(-14)+(-12)+21+(-9)-4$$
5 step solution
Problem 15
Perform the following operations with real numbers. $$\frac{-112}{16}$$
3 step solution
Problem 15
From the list \(0,14, \frac{2}{3}, \pi, \sqrt{7},-\frac{11}{14}\), \(2.34,3.2 \overline{1}, \frac{55}{8},-\sqrt{17},-19\), and \(-2.6\), identify each of the following. The nonnegative integers
3 step solution
Problem 16
Simplify the algebraic expressions in Problems \(15-34\) by removing parentheses and combining similar terms. $$5(x-1)+7(x+4)$$
4 step solution
Problem 16
Simplify each numerical expression. Be sure to take advantage of the properties whenever they can be used to make the computations easier. $$-37+42+18+37+(-42)-6$$
3 step solution
Problem 16
Perform the following operations with real numbers. $$\frac{-75}{5}$$
3 step solution
Problem 16
From the list \(0,14, \frac{2}{3}, \pi, \sqrt{7},-\frac{11}{14}\), \(2.34,3.2 \overline{1}, \frac{55}{8},-\sqrt{17},-19\), and \(-2.6\), identify each of the following. The irrational numbers
4 step solution
Problem 17
Simplify the algebraic expressions in Problems \(15-34\) by removing parentheses and combining similar terms. $$-2(a-4)-3(a+2)$$
3 step solution
Problem 17
Simplify each numerical expression. Be sure to take advantage of the properties whenever they can be used to make the computations easier. $$[83+(-99)]+18$$
2 step solution
Problem 17
Perform the following operations with real numbers. $$-2 \frac{3}{8}+5 \frac{7}{8}$$
4 step solution
Problem 17
From the list \(0,14, \frac{2}{3}, \pi, \sqrt{7},-\frac{11}{14}\), \(2.34,3.2 \overline{1}, \frac{55}{8},-\sqrt{17},-19\), and \(-2.6\), identify each of the following. The real numbers
5 step solution
Problem 18
Simplify the algebraic expressions in Problems \(15-34\) by removing parentheses and combining similar terms. $$-7(a+1)-9(a+4)$$
3 step solution
Problem 18
Simplify each numerical expression. Be sure to take advantage of the properties whenever they can be used to make the computations easier. $$[63+(-87)]+(-64)$$
2 step solution
Problem 18
Perform the following operations with real numbers. $$-1 \frac{1}{5}+3 \frac{4}{5}$$
3 step solution
Problem 18
From the list \(0,14, \frac{2}{3}, \pi, \sqrt{7},-\frac{11}{14}\), \(2.34,3.2 \overline{1}, \frac{55}{8},-\sqrt{17},-19\), and \(-2.6\), identify each of the following. The nonpositive integers
3 step solution
Problem 19
Simplify the algebraic expressions in Problems \(15-34\) by removing parentheses and combining similar terms. $$3\left(n^{2}+1\right)-8\left(n^{2}-1\right)$$
3 step solution
Problem 19
Simplify each numerical expression. Be sure to take advantage of the properties whenever they can be used to make the computations easier. $$(25)(-13)(4)$$
2 step solution
Problem 19
Perform the following operations with real numbers. $$4 \frac{1}{3}-\left(-1 \frac{1}{6}\right)$$
8 step solution
Problem 19
Use the following set designations. $$ \begin{aligned} &N=\\{x \mid x \text { is a natural number }\\} \\ &Q=\\{x \mid x \text { is a rational number }\\} \\ &W=\\{x \mid x \text { is a whole number }\\} \\ &H=\\{x \mid x \text { is an irrational number }\\} \\ &I=\\{x \mid x \text { is an integer }\\} \\ &R=\\{x \mid x \text { is a real number }\\} \end{aligned} $$ Place \(\subseteq\) or \(\nsubseteq\) in each blank to make a true statement. \(R\)_____ \(N\)
3 step solution
Problem 20
Simplify the algebraic expressions in Problems \(15-34\) by removing parentheses and combining similar terms. $$4\left(n^{2}+3\right)+\left(n^{2}-7\right)$$
4 step solution
Problem 20
Simplify each numerical expression. Be sure to take advantage of the properties whenever they can be used to make the computations easier. $$(14)(25)(-13)(4)$$
4 step solution
Problem 20
Perform the following operations with real numbers. $$1 \frac{1}{12}-\left(-5 \frac{3}{4}\right)$$
6 step solution
Problem 20
Use the following set designations. $$ \begin{aligned} &N=\\{x \mid x \text { is a natural number }\\} \\ &Q=\\{x \mid x \text { is a rational number }\\} \\ &W=\\{x \mid x \text { is a whole number }\\} \\ &H=\\{x \mid x \text { is an irrational number }\\} \\ &I=\\{x \mid x \text { is an integer }\\} \\ &R=\\{x \mid x \text { is a real number }\\} \end{aligned} $$ Place \(\subseteq\) or \(\nsubseteq\) in each blank to make a true statement. \(N\)_____ \(R\)
3 step solution
Problem 21
Simplify the algebraic expressions in Problems \(15-34\) by removing parentheses and combining similar terms. $$-6\left(x^{2}-5\right)-\left(x^{2}-2\right)$$
3 step solution
Problem 21
Simplify each numerical expression. Be sure to take advantage of the properties whenever they can be used to make the computations easier. $$17(97)+17(3)$$
5 step solution
Problem 21
Perform the following operations with real numbers. $$\left(-\frac{1}{3}\right)\left(\frac{2}{5}\right)$$
5 step solution
Problem 21
Use the following set designations. $$ \begin{aligned} &N=\\{x \mid x \text { is a natural number }\\} \\ &Q=\\{x \mid x \text { is a rational number }\\} \\ &W=\\{x \mid x \text { is a whole number }\\} \\ &H=\\{x \mid x \text { is an irrational number }\\} \\ &I=\\{x \mid x \text { is an integer }\\} \\ &R=\\{x \mid x \text { is a real number }\\} \end{aligned} $$ Place \(\subseteq\) or \(\nsubseteq\) in each blank to make a true statement. \(I\)_____ \(Q\)
4 step solution
Problem 22
Simplify the algebraic expressions in Problems \(15-34\) by removing parentheses and combining similar terms. $$3(x+y)-2(x-y)$$
2 step solution
Problem 22
Simplify each numerical expression. Be sure to take advantage of the properties whenever they can be used to make the computations easier. $$-86[49+(-48)]$$
4 step solution
Problem 22
Perform the following operations with real numbers. $$(-8)\left(\frac{1}{3}\right)$$
3 step solution
Problem 22
Use the following set designations. $$ \begin{aligned} &N=\\{x \mid x \text { is a natural number }\\} \\ &Q=\\{x \mid x \text { is a rational number }\\} \\ &W=\\{x \mid x \text { is a whole number }\\} \\ &H=\\{x \mid x \text { is an irrational number }\\} \\ &I=\\{x \mid x \text { is an integer }\\} \\ &R=\\{x \mid x \text { is a real number }\\} \end{aligned} $$ Place \(\subseteq\) or \(\nsubseteq\) in each blank to make a true statement. \(N\)_____ \(I\)
6 step solution
Problem 23
Simplify the algebraic expressions in Problems \(15-34\) by removing parentheses and combining similar terms. $$5(2 x+1)+4(3 x-2)$$
5 step solution
Problem 23
Simplify each numerical expression. Be sure to take advantage of the properties whenever they can be used to make the computations easier. $$14-12-21-14+17-18+19-32$$
4 step solution
Problem 23
Perform the following operations with real numbers. $$\frac{1}{2} \div\left(-\frac{1}{8}\right)$$
4 step solution
Problem 23
Use the following set designations. $$ \begin{aligned} &N=\\{x \mid x \text { is a natural number }\\} \\ &Q=\\{x \mid x \text { is a rational number }\\} \\ &W=\\{x \mid x \text { is a whole number }\\} \\ &H=\\{x \mid x \text { is an irrational number }\\} \\ &I=\\{x \mid x \text { is an integer }\\} \\ &R=\\{x \mid x \text { is a real number }\\} \end{aligned} $$ Place \(\subseteq\) or \(\nsubseteq\) in each blank to make a true statement. \(Q\)_____ \(H\)
4 step solution
Problem 24
Simplify the algebraic expressions in Problems \(15-34\) by removing parentheses and combining similar terms. $$5(3 x-1)+6(2 x+3)$$
4 step solution
Problem 24
Simplify each numerical expression. Be sure to take advantage of the properties whenever they can be used to make the computations easier. $$16-14-13-18+19+14-17+21$$
4 step solution
Problem 24
Perform the following operations with real numbers. $$\frac{2}{3} \div\left(-\frac{1}{6}\right)$$
5 step solution
Problem 24
Use the following set designations. $$ \begin{aligned} &N=\\{x \mid x \text { is a natural number }\\} \\ &Q=\\{x \mid x \text { is a rational number }\\} \\ &W=\\{x \mid x \text { is a whole number }\\} \\ &H=\\{x \mid x \text { is an irrational number }\\} \\ &I=\\{x \mid x \text { is an integer }\\} \\ &R=\\{x \mid x \text { is a real number }\\} \end{aligned} $$ Place \(\subseteq\) or \(\nsubseteq\) in each blank to make a true statement. \(H\)_____ \(Q\)
3 step solution
Problem 25
Simplify the algebraic expressions in Problems \(15-34\) by removing parentheses and combining similar terms. $$3(2 x-5)-4(5 x-2)$$
3 step solution
Problem 25
Simplify each numerical expression. Be sure to take advantage of the properties whenever they can be used to make the computations easier. $$(-50)(15)(-2)-(-4)(17)(25)$$
3 step solution
Problem 25
Perform the following operations with real numbers. $$0 \div(-14)$$
3 step solution
Problem 25
Use the following set designations. $$ \begin{aligned} &N=\\{x \mid x \text { is a natural number }\\} \\ &Q=\\{x \mid x \text { is a rational number }\\} \\ &W=\\{x \mid x \text { is a whole number }\\} \\ &H=\\{x \mid x \text { is an irrational number }\\} \\ &I=\\{x \mid x \text { is an integer }\\} \\ &R=\\{x \mid x \text { is a real number }\\} \end{aligned} $$ Place \(\subseteq\) or \(\nsubseteq\) in each blank to make a true statement. \(N\)_____ \(W\)
3 step solution