Chapter 2
Introductory Algebra for College Students · 565 exercises
Problem 10
Graph the solutions of each inequality on a number line. \(-3 \leq x<6\)
4 step solution
Problem 10
A triangle has a base of 6 feet and an area of 30 square feet. Find the triangle's height.
4 step solution
Problem 10
Solve each equation in using the multiplication property of equality. Be sure to check your proposed $$-18=-3 z$$
3 step solution
Problem 10
Solve each formula for the specified variable. Do you recognize the formula? If so, what does it describe? \(y=m x+b\) for \(x\)
3 step solution
Problem 10
Solve each equation. Be sure to check your proposed solution by substituting it for the variable in the original equation. $$4(2 x-3)=32$$
4 step solution
Problem 11
Let \(x\) represent the number. Use the given conditions to write an equation. Solve the equation and find the number. Seven subtracted from five times a number is \(178 .\) Find the number.
3 step solution
Problem 11
Solve each equation using the addition property of equality. Be sure to check your proposed solutions. $$x-4=19$$
2 step solution
Problem 11
Graph the solutions of each inequality on a number line.
\(-1
3 step solution
Problem 11
A rectangle has a width of 44 centimeters and a perimeter of 188 centimeters. What is the rectangle's length?
5 step solution
Problem 11
Solve each equation in using the multiplication property of equality. Be sure to check your proposed $$-54=-9 z$$
4 step solution
Problem 11
Solve each formula for the specified variable. Do you recognize the formula? If so, what does it describe? \(T=D+p m\) for \(D\)
3 step solution
Problem 11
Solve each equation. Be sure to check your proposed solution by substituting it for the variable in the original equation. $$38=30-2(x-1)$$
5 step solution
Problem 12
Let \(x\) represent the number. Use the given conditions to write an equation. Solve the equation and find the number. Eight subtracted from six times a number is \(298 .\) Find the number.
3 step solution
Problem 12
Solve each equation using the addition property of equality. Be sure to check your proposed solutions. $$y-5=-18$$
3 step solution
Problem 12
Graph the solutions of each inequality on a number line. \(-2 \leq x \leq 0\)
2 step solution
Problem 12
A rectangle has a width of 46 centimeters and a perimeter of 208 centimeters. What is the rectangle's length?
3 step solution
Problem 12
Solve each equation in using the multiplication property of equality. Be sure to check your proposed $$-8 x=6$$
4 step solution
Problem 12
Solve each formula for the specified variable. Do you recognize the formula? If so, what does it describe? \(P=C+M C\) for \(M\)
3 step solution
Problem 12
Solve each equation. Be sure to check your proposed solution by substituting it for the variable in the original equation. $$20=44-8(2-x)$$
3 step solution
Problem 13
Let \(x\) represent the number. Use the given conditions to write an equation. Solve the equation and find the number. A number increased by 5 is two times the number. Find the number.
2 step solution
Problem 13
Solve each equation using the addition property of equality. Be sure to check your proposed solutions. $$z+8=-12$$
3 step solution
Problem 13
Express the solution set of each inequality in interval notation and graph the interval. \(x \leq 3\)
3 step solution
Problem 13
Solve each equation in using the multiplication property of equality. Be sure to check your proposed $$-8 x=4$$
3 step solution
Problem 13
Solve each formula for the specified variable. Do you recognize the formula? If so, what does it describe? \(A=\frac{1}{2} b h\) for \(b\)
3 step solution
Problem 13
Solve each equation. Be sure to check your proposed solution by substituting it for the variable in the original equation. $$2(4 z+3)-8=46$$
4 step solution
Problem 14
Let \(x\) represent the number. Use the given conditions to write an equation. Solve the equation and find the number. A number increased by 12 is four times the number. Find the number.
3 step solution
Problem 14
Solve each equation using the addition property of equality. Be sure to check your proposed solutions. $$z+13=-15$$
3 step solution
Problem 14
Express the solution set of each inequality in interval notation and graph the interval. \(x \leq 5\)
3 step solution
Problem 14
Solve each equation in using the multiplication property of equality. Be sure to check your proposed $$17 y=0$$
4 step solution
Problem 14
Solve each formula for the specified variable. Do you recognize the formula? If so, what does it describe? \(A=\frac{1}{2} b h\) for \(h\)
3 step solution
Problem 14
Solve each equation. Be sure to check your proposed solution by substituting it for the variable in the original equation. $$3(3 z+5)-7=89$$
5 step solution
Problem 15
Let \(x\) represent the number. Use the given conditions to write an equation. Solve the equation and find the number. Twice the sum of four and a number is \(36 .\) Find the number.
3 step solution
Problem 15
Solve each equation using the addition property of equality. Be sure to check your proposed solutions. $$-2=x+14$$
2 step solution
Problem 15
Express the solution set of each inequality in interval notation and graph the interval. \(x>\frac{5}{2}\)
2 step solution
Problem 15
Solve each formula for the specified variable. Do you recognize the formula? If so, what does it describe? \(M=\frac{n}{5}\) for \(n\)
3 step solution
Problem 15
Solve each equation in using the multiplication property of equality. Be sure to check your proposed $$-16 y=0$$
4 step solution
Problem 15
Solve each equation. Be sure to check your proposed solution by substituting it for the variable in the original equation. $$6 x-(3 x+10)=14$$
5 step solution
Problem 16
Let \(x\) represent the number. Use the given conditions to write an equation. Solve the equation and find the number. Three times the sum of five and a number is \(48 .\) Find the number.
5 step solution
Problem 16
Solve each equation using the addition property of equality. Be sure to check your proposed solutions. $$-13=x+11$$
3 step solution
Problem 16
Express the solution set of each inequality in interval notation and graph the interval. \(x>\frac{7}{2}\)
3 step solution
Problem 16
Solve each formula for the specified variable. Do you recognize the formula? If so, what does it describe? \(M=\frac{n}{5}\) for \(n\)
3 step solution
Problem 16
Solve each equation in using the multiplication property of equality. Be sure to check your proposed $$\frac{2}{3} y=12$$
3 step solution
Problem 16
Solve each equation. Be sure to check your proposed solution by substituting it for the variable in the original equation. $$5 x-(2 x+14)=10$$
3 step solution
Problem 17
Let \(x\) represent the number. Use the given conditions to write an equation. Solve the equation and find the number. Nine times a number is 30 more than three times that number. Find the number.
3 step solution
Problem 17
Solve each equation using the addition property of equality. Be sure to check your proposed solutions. $$-17=y-5$$
3 step solution
Problem 17
Use the formulas for the area and circumference of a circle in Table 2.4 on page 170 to solve Exercises \(13-18\). In Exercises \(13-16,\) find the area and circumference of each circle. Express answers in terms of \(\pi .\) Then round to the nearest whole number. The circumference of a circle is \(14 \pi\) inches. Find the circle's a adius and diameter.
2 step solution
Problem 17
Express the solution set of each inequality in interval notation and graph the interval. \(x \leq 0\)
3 step solution
Problem 17
Solve each formula for the specified variable. Do you recognize the formula? If so, what does it describe? \(\frac{c}{2}+80=2 F\) for \(c\)
3 step solution
Problem 17
Solve each equation in using the multiplication property of equality. Be sure to check your proposed $$\frac{3}{4} y=15$$
3 step solution
Problem 17
Solve each equation. Be sure to check your proposed solution by substituting it for the variable in the original equation. $$5(2 x+1)=12 x-3$$
4 step solution