Chapter 5

Elementary Algebra · 519 exercises

Problem 24

For the following problems, translate the following phrases or sentences into mathematical expressions or equations. One third of a number is two fifths.

2 step solution

Problem 24

For the following problems, solve each conditional equation. If the equation is not conditional, identify it as an identity or a contradiction. $$ 10 y-3=-23 $$

3 step solution

Problem 24

In the following problems, solve each of the conditional equations. $$ -9 y=126 $$

3 step solution

Problem 24

Determine which of the literal equations have been solved for a variable. Write "solved" or "not solved." $$ y=3 x+7 $$

2 step solution

Problem 25

Solve the equations. $$ \frac{y}{9}=54 $$

5 step solution

Problem 25

Solve the following problems. Solve \(y=8 x-11\) for \(y\) if \(x=3\), and write the solution as an ordered pair.

4 step solution

Problem 25

For the following problems, solve the inequalities. $$ -5 x \leq 20 $$

3 step solution

Problem 25

When eleven is subtracted from a number, the result is \(85 .\) What is the number?

3 step solution

Problem 25

For the following problems, translate the following phrases or sentences into mathematical expressions or equations. Three times a number is nine more than twice the number.

2 step solution

Problem 25

For the following problems, solve each conditional equation. If the equation is not conditional, identify it as an identity or a contradiction. $$ 14 x+1=-55 $$

4 step solution

Problem 25

In the following problems, solve each of the conditional equations. $$ \frac{x}{6}=1 $$

4 step solution

Problem 25

Determine which of the literal equations have been solved for a variable. Write "solved" or "not solved." $$ m=2 k+n-1 $$

6 step solution

Problem 26

For the following problems, solve the linear equations in two variables. $$ y=6(x-7), \text { if } x=2 $$

4 step solution

Problem 26

Solve the equations. $$ \frac{a}{-3}=-17 $$

3 step solution

Problem 26

For the following problems, solve the inequalities. $$ -8 x<40 $$

2 step solution

Problem 26

Three times a number is divided by 6 and the result is \(10.5 .\) What is the number?

5 step solution

Problem 26

For the following problems, translate the following phrases or sentences into mathematical expressions or equations. Five times a number is that number minus two.

3 step solution

Problem 26

For the following problems, solve each conditional equation. If the equation is not conditional, identify it as an identity or a contradiction. $$ \frac{x}{9}+2=6 $$

3 step solution

Problem 26

In the following problems, solve each of the conditional equations. $$ \frac{a}{5}=6 $$

2 step solution

Problem 26

Determine which of the literal equations have been solved for a variable. Write "solved" or "not solved." $$ 4 a=y-6 $$

3 step solution

Problem 27

For the following problems, solve the linear equations in two variables. $$ y=2(4 x+5), \text { if } x=-1 $$

3 step solution

Problem 27

Solve the equations. $$ \frac{c}{6}=15 $$

4 step solution

Problem 27

For the following problems, solve the inequalities. $$ -7 z<77 $$

2 step solution

Problem 27

When a number is multiplied by itself, the result is 144 . What is the number?

3 step solution

Problem 27

For the following problems, translate the following phrases or sentences into mathematical expressions or equations. Twice a number added to six results in thirty.

4 step solution

Problem 27

For the following problems, solve each conditional equation. If the equation is not conditional, identify it as an identity or a contradiction. $$ \frac{m}{7}-8=-11 $$

5 step solution

Problem 27

In the following problems, solve each of the conditional equations. $$ \frac{k}{7}=6 $$

3 step solution

Problem 28

For the following problems, solve the linear equations in two variables. $$ 5 y=9(x-3), \text { if } x=2 $$

3 step solution

Problem 28

Solve the equations. $$ \frac{3 a}{4}=9 $$

3 step solution

Problem 28

For the following problems, solve the inequalities. $$ -3 y>39 $$

2 step solution

Problem 28

A number is tripled, then increased by seven. The result is \(48 .\) What is the number?

4 step solution

Problem 28

For the following problems, translate the following phrases or sentences into mathematical expressions or equations. Ten times a number less four results in sixty-six.

2 step solution

Problem 28

For the following problems, solve each conditional equation. If the equation is not conditional, identify it as an identity or a contradiction. $$ \frac{y}{4}+6=12 $$

4 step solution

Problem 28

In the following problems, solve each of the conditional equations. $$ \frac{x}{3}=72 $$

5 step solution

Problem 29

Solve the equations. $$ \frac{4 y}{5}=-12 $$

4 step solution

Problem 29

For the following problems, solve the inequalities. $$ \frac{x}{4} \geq 12 $$

4 step solution

Problem 29

Eight times a number is decreased by three times the number, giving a difference of \(22 .\) What is the number?

5 step solution

Problem 29

For the following problems, translate the following phrases or sentences into mathematical expressions or equations. A number less twenty-five is equal to 3.019 .

4 step solution

Problem 29

For the following problems, solve each conditional equation. If the equation is not conditional, identify it as an identity or a contradiction. $$ \frac{x}{8}-2=5 $$

4 step solution

Problem 29

In the following problems, solve each of the conditional equations. $$ \frac{x}{8}=96 $$

4 step solution

Problem 30

Solve the equations. $$ \frac{r}{4}=7 $$

3 step solution

Problem 30

For the following problems, solve the linear equations in two variables. $$ -2 y=3(2 x-5), \text { if } x=6 $$

4 step solution

Problem 30

For the following problems, solve the inequalities. $$ \frac{y}{7}>3 $$

3 step solution

Problem 30

One number is fifteen more than another number. The sum of the two numbers is \(27 .\) What are they?

5 step solution

Problem 30

For the following problems, translate the following phrases or sentences into mathematical expressions or equations. Seven more than some number is five more than twice the number.

4 step solution

Problem 30

For the following problems, solve each conditional equation. If the equation is not conditional, identify it as an identity or a contradiction. $$ \frac{m}{11}-15=-19 $$

4 step solution

Problem 30

In the following problems, solve each of the conditional equations. $$ \frac{y}{-3}=-4 $$

4 step solution

Problem 30

Determine which of the literal equations have been solved for a variable. Write "solved" or "not solved." $$ m=m $$

3 step solution

Problem 31

For the following problems, solve the linear equations in two variables. $$ -8 y=7(8 x+2), \text { if } x=0 $$

4 step solution

Problem 31

Solve the equations. $$ \frac{6 a}{-5}=11 $$

3 step solution

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