Chapter 11

Fundamentals of Mathematics · 415 exercises

Problem 20

Specify each term. $$7 a-2 b-3 c-4 d$$

2 step solution

Problem 21

Translate each phrase or sentence to a mathematical expression or equation. A number minus the opposite of five.

3 step solution

Problem 21

For problems \(17-46\), find the value of each expression. $$ -5 s-2 t+1, \text { if } s=2 \text { and } t=-2 $$

4 step solution

Problem 21

The sum of five consecutive integers is \(-5 .\) What are they?

5 step solution

Problem 21

Solve each equation. $$ 6 x+5=4 x-11 $$

3 step solution

Problem 21

Solve each equation. Be sure to check each result. $$ 2 m=-62 $$

3 step solution

Problem 21

Verify that each given value is a solution to the given equation. $$-3 y+7=2 y-15, y=\frac{22}{5}$$

3 step solution

Problem 21

Simplify each expression by combining like terms. $$(-5+3) a-(2+5) b-(3+8) b$$

2 step solution

Problem 21

Specify each term. $$-6 a-5 b$$

4 step solution

Problem 22

Translate each phrase or sentence to a mathematical expression or equation. A number minus the opposite of negative one.

4 step solution

Problem 22

For problems \(17-46\), find the value of each expression. $$ -3 m-4 n+5, \text { if } m=-1 \text { and } n=-1 $$

3 step solution

Problem 22

The perimeter of a rectangle is 18 meters. Find the length and width of the rectangle if the length is 1 meter more than three times the width.

7 step solution

Problem 22

Solve each equation. $$ 4 y-8-6 y=3 y+1 $$

4 step solution

Problem 22

Solve each equation. Be sure to check each result. $$ 3 m=-54 $$

4 step solution

Problem 22

Simplify each expression by combining like terms. $$5 \star+2 \Delta+3 \Delta-8 \star$$

4 step solution

Problem 23

Translate each phrase or sentence to a mathematical expression or equation. A number minus the opposite of negative twelve.

4 step solution

Problem 23

For problems \(17-46\), find the value of each expression. $$ m-4, \text { if } m=4 $$

3 step solution

Problem 23

Three consecutive even integers add to -36 . What are they?

5 step solution

Problem 23

Solve each equation. Be sure to check each result. $$ \frac{x}{4}=7 $$

4 step solution

Problem 24

Translate each phrase or sentence to a mathematical expression or equation. Eleven added to three times a number.

3 step solution

Problem 24

Find the length and width of a rectangle with perimeter 74 inches, if the width of the rectangle is 8 inches less than twice the length.

6 step solution

Problem 24

The perimeter of a rectangle is 38 feet. Find the length and width of the rectangle if the length is 5 feet less than three times the width.

7 step solution

Problem 24

Solve each equation. Be sure to check each result. $$ \frac{y}{3}=11 $$

4 step solution

Problem 24

Simplify each expression by combining like terms. $$16 x-12 y+5 x+7-5 x-16-3 y$$

5 step solution

Problem 24

Write \(1 m\) in a simpler way.

3 step solution

Problem 25

Translate each phrase or sentence to a mathematical expression or equation. Six plus five times an unknown number.

4 step solution

Problem 25

For problems \(17-46\), find the value of each expression. $$ -x+2 y, \text { if } x=-7 \text { and } y=-1 $$

3 step solution

Problem 25

Find the length and width of a rectangle with perimeter 18 feet, if the width of the rectangle is 7 feet less than three times the length.

7 step solution

Problem 25

Four numbers add to \(-2 .\) The second number is three more than twice the negative of the first number. The third number is six less than the first number. The fourth number is eleven less than twice the first number. Find the numbers.

6 step solution

Problem 25

Solve each equation. Be sure to check each result. $$ \frac{-z}{6}=-14 $$

4 step solution

Problem 25

Simplify each expression by combining like terms. $$-3 y+4 z-11-3 z-2 y+5-4(8-3)$$

3 step solution

Problem 26

Translate each phrase or sentence to a mathematical expression or equation. Twice a number minus seven equals four.

4 step solution

Problem 26

For problems \(17-46\), find the value of each expression. $$ -a+3 b-6, \text { if } a=-3 \text { and } b=0 $$

4 step solution

Problem 26

A person makes a mistake when copying information regarding a particular rectangle. The copied information is as follows: The length of a rectangle is 5 inches less than two times the width. The perimeter of the rectangle is 2 inches. What is the mistake?

6 step solution

Problem 26

Solve each equation. Be sure to check each result. $$ \frac{-w}{5}=1 $$

3 step solution

Problem 26

Convert \(\frac{24}{11}\) to a mixed number.

4 step solution

Problem 26

In the expression \(5 a\), how many a's are indicated?

3 step solution

Problem 27

Translate each phrase or sentence to a mathematical expression or equation. Ten times a quantity increased by two is nine.

5 step solution

Problem 27

For problems \(17-46\), find the value of each expression. $$ 5 x-4 y-7 y+y-7 x, \text { if } x=1 \text { and } y=-2 $$

3 step solution

Problem 27

A person makes a mistake when copying information regarding a particular triangle. The copied information is as follows: Two sides of a triangle are the same length. The third side is 10 feet less than three times the length of one of the other sides. The perimeter of the triangle is 5 feet. What is the mistake?

6 step solution

Problem 27

Solve each equation. Be sure to check each result. $$ 3 m-1=-13 $$

3 step solution

Problem 27

Determine the missing numerator: \(\frac{3}{8}=\frac{?}{64}\).

5 step solution

Problem 27

In the expression \(-7 c\), how many \(c\) 's are indicated?

4 step solution

Problem 28

Translate each phrase or sentence to a mathematical expression or equation. When fourteen is added to two times a number the result is six.

5 step solution

Problem 28

For problems \(17-46\), find the value of each expression. $$ 2 a-6 b-3 a-a+2 b, \text { if } a=4 \text { and } b=-2 $$

4 step solution

Problem 28

The perimeter of a triangle is 75 meters. If each of two legs is exactly twice the length of the shortest leg, how long is the shortest leg?

6 step solution

Problem 28

Solve each equation. Be sure to check each result. $$ 4 x+7=-17 $$

3 step solution

Problem 28

Simplify \(\frac{\frac{5}{6}-\frac{1}{4}}{\frac{1}{12}}\).

3 step solution

Problem 28

Find the value of each expression. $$2 m-6 n, \text { if } m=-3 \text { and } n=4$$

4 step solution

Problem 29

Translate each phrase or sentence to a mathematical expression or equation. Four times a number minus twenty-nine is eleven.

4 step solution

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