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Questions and Answers of College Algebra

Solve each equation. |6x| = |9x + 1|
Solve each equation. |3x + 1 = |2x + 4||
Solve each equation. |7x + 12| = |x - 8|
Solve each equation. 1 || - 2
Solve each equation. 2 3 X 2 || 1 3 x + 3
Solve each equation or inequality. 01- = |x|
Solve each equation or inequality. |x ≥-15
Solve each equation. | 13x| = |2x + 1|
Solve each equation. |2x - 6| = |2x + 11|
Solve each equation or inequality. |13x +1| = -3
Solve each equation. |3x - 1| = |3x + 9|
Solve each equation or inequality. |2x − 1| = −6 - -6
Solve each equation or inequality. | 12t3 = -8
Solve each equation or inequality. |8x + 4 = -4
Solve each equation or inequality. |x + 5 > −9
Solve each equation or inequality. |4x + 1 = 0
Solve each equation or inequality. |6x - 2 = 0
Solve each equation or inequality. |x +9> -3
Solve each equation or inequality. |7x + 3| ≤0
Solve each equation or inequality. |4x − 1| ≤ 0
Solve each equation or inequality. |5r – 2| = 0 =
Solve each equation or inequality. |7x + 4 = 0
Solve each equation or inequality. |x2|+3≥2
Solve each equation or inequality. |x − 4 + 5 ≥ 4
Solve each equation or inequality. | 10x + 7 + 3 < 1
Solve each equation or inequality. |4x + 1-2
In later courses in mathematics, it is sometimes necessary to find an interval in which x must lie in order to keep y within a given difference of some number. For example, supposeand we want y to be
In later courses in mathematics, it is sometimes necessary to find an interval in which x must lie in order to keep y within a given difference of some number. For example, supposeand we want y to be
The 10 tallest buildings in Houston, Texas, are listed along with their heightsTo find the average of a group of numbers, we add the numbers and then divide by the number of numbers. Use a calculator
Dr. Mosely has determined that 99% of the babies he has delivered have weighed x pounds, whereWhat range of weights corresponds to this inequality? x 8.3 < 1.5. -
The Celsius temperatures x on Mars approximately satisfy the inequalityWhat range of temperatures corresponds to this inequality? x + 85 ≤ 55.
The 10 tallest buildings in Houston, Texas, are listed along with their heightsLet k represent the average height of these buildings. If a height x satisfies the inequality |x - k| Data from in
The 10 tallest buildings in Houston, Texas, are listed along with their heightsRepeat Exercise 130, but list the buildings that are within 95 ft of the average.Data from in Exercise 130Let k
The recommended daily intake (RDI) of calcium for females aged 19–50 is 1000 mg. Write this statement as an absolute value inequality, with x representing the RDI, to express the RDI plus or minus
The average clotting time of blood is 7.45 sec, with a variation of plus or minus 3.6 sec. Write this statement as an absolute value inequality, with x representing the time. Solve the inequality.
The 10 tallest buildings in Houston, Texas, are listed along with their heightsWork each of the following.(a) Write an absolute value inequality that describes the height of a building that is not
In Problems 11–58, perform the indicated operation, and write each expression in the standard form a + bi.-3i(7 + 6i)
In Problems 11–58, perform the indicated operation, and write each expression in the standard form a + bi.-4(2 + 8i)
In Problems 11–58, perform the indicated operation, and write each expression in the standard form a + bi.i7 (1 + i2)
In Problems 11–58, perform the indicated operation, and write each expression in the standard form a + bi.(1 + i)3
In Problems 11–58, perform the indicated operation, and write each expression in the standard form a + bi.4i3 - 2i2 + 1
In Problems 11–58, perform the indicated operation, and write each expression in the standard form a + bi.6i3 - 4i5
In Problems 11–58, perform the indicated operation, and write each expression in the standard form a + bi.4 + i3
In Problems 11–58, perform the indicated operation, and write each expression in the standard form a + bi.i6 - 5
In Problems 11–58, perform the indicated operation, and write each expression in the standard form a + bi.i-23
In Problems 11–58, perform the indicated operation, and write each expression in the standard form a + bi.i-20
In Problems 11–58, perform the indicated operation, and write each expression in the standard form a + bi.i14
In Problems 11–58, perform the indicated operation, and write each expression in the standard form a + bi.i23
In Problems 11–58, perform the indicated operation, and write each expression in the standard form a + bi.(1 - i)2
In Problems 11–58, perform the indicated operation, and write each expression in the standard form a + bi.(1 + i)2
In Problems 11–58, perform the indicated operation, and write each expression in the standard form a + bi. اكواد V3 2 1 2 2
In Problems 11–58, perform the indicated operation, and write each expression in the standard form a + bi. 2 + V³₁)³ i 2
In Problems 11–58, perform the indicated operation, and write each expression in the standard form a + bi. 2 + 3i 1-i
In Problems 11–58, perform the indicated operation, and write each expression in the standard form a + bi. 1-9 1 + i
In Problems 11–58, perform the indicated operation, and write each expression in the standard form a + bi. 2-i -2i
In Problems 11–58, perform the indicated operation, and write each expression in the standard form a + bi. 2 + i i
In Problems 11–58, perform the indicated operation, and write each expression in the standard form a + bi. 13 5 - 12i
In Problems 11–58, perform the indicated operation, and write each expression in the standard form a + bi. 10 3 - 4i
In Problems 11–58, perform the indicated operation, and write each expression in the standard form a + bi.3i(-3 + 4i)
In Problems 11–58, perform the indicated operation, and write each expression in the standard form a + bi.3(2 - 6i)
In Problems 19–68, solve each equation, if possible. 8w+5 10w - 7 || 4w 3 5w + 7
In Problems 19–68, solve each equation, if possible. -4 x + 4 || -3 x+6
Find the dimensions of a rectangle whose perimeter is 26 meters and whose area is 40 square meters.
An admissible value for the variable that makes the equation a true statement is called a(n) ______ of the equation. (a) Identity (b) Solution (c) Degree (d) Model
A chemist mixes 10 liters of a 20% solution with x liters of a 35% solution. Which of the following expressions represents the total number of liters in the mixture? (a) x (b) 20 -
Which of the following quadratic equations is in standard form? (a) x² 2 7x = 5 (b) 9 = x² (c) (x + 5)(x - 4) = 0 (d) 0 = 5x² - 6x - 1
In Problems 11–18, mentally solve each equation.7x = 21
In Problems 11–30, solve each equation by factoring.x2 - 9x = 0
In Problems 11–18, mentally solve each equation. 6x = -24
In Problems 11–30, solve each equation by factoring.x2 + 4x = 0
In Problems 11–18, mentally solve each equation. 3x + 15 = 0
In Problems 11–30, solve each equation by factoring.x2 - 25 = 0
In Problems 11–18, mentally solve each equation. 6x + 18 = 0
In Problems 11–30, solve each equation by factoring.x2 - 9 = 0
In Problems 11–18, mentally solve each equation. 2x - 3 = 0
In Problems 11–18, mentally solve each equation. 1 4 -X = 7 20
In Problems 11–18, mentally solve each equation. 2 -X = 3 ald 2
In Problems 11–30, solve each equation by factoring.z2 + z - 6 = 0
In Problems 11–18, mentally solve each equation. 3x + 4 = 0
In Problems 11–30, solve each equation by factoring.v2 + 7v + 6 = 0
In Problems 11–30, solve each equation by factoring.2x2 - 5x - 3 = 0
In Problems 11–30, solve each equation by factoring.3x2 + 5x + 2 = 0
In Problems 19–68, solve each equation, if possible. 3x + 4 = x
In Problems 11–30, solve each equation by factoring.-5w2 + 180 = 0
In Problems 19–68, solve each equation, if possible. 2x + 9 = 5x
In Problems 11–30, solve each equation by factoring.2y2 - 50 = 0
In Problems 19–68, solve each equation, if possible. 2t - 6 = 3 - t
In Problems 11–30, solve each equation by factoring.x(x + 3) - 10 = 0
In Problems 19–68, solve each equation, if possible. 5y + 6 = -18 - y
In Problems 11–30, solve each equation by factoring.x(x + 4) = 12
In Problems 19–68, solve each equation, if possible. 6 - x = 2x + 9
In Problems 11–30, solve each equation by factoring.4x2 + 9 = 12x
In Problems 19–68, solve each equation, if possible. 3 - 2x = 2 - x
In Problems 11–30, solve each equation by factoring. 6x - 5 6 X
In Problems 11–30, solve each equation by factoring. L = x | 12 x +
In Problems 11–30, solve each equation by factoring. 4(x - 2) x 3 + 3 x -3 x(x − 3)
In Problems 11–30, solve each equation by factoring.6(p2 - 1) = 5p
In Problems 19–68, solve each equation, if possible.3 + 2n = 4n + 7
In Problems 11–30, solve each equation by factoring.2(2u2 - 4u) + 3 = 0
In Problems 19–68, solve each equation, if possible.6 - 2m = 3m + 1

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