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