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