
PREALGEBRA
15th Edition
ISBN: 9781938168994
Author: OpenStax
Publisher: OpenStax
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Textbook Question
Chapter 2.3, Problem 165E
In the following exercises, solve each equation using the subtraction property of equality.
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Here is an augmented matrix for a system of equations (three equations and three variables). Let the
variables used be x, y, and z:
1 2 4 6
0 1
-1
3
0
0
1
4
Note: that this matrix is already in row echelon form.
Your goal is to use this row echelon form to revert back to the equations that this represents, and then to
ultimately solve the system of equations by finding x, y and z.
Input your answer as a coordinate point: (x,y,z) with no spaces.
Chapter 2 Solutions
PREALGEBRA
Ch. 2.1 - Translate from algebra to words. 18+11 (b) (27)(9)...Ch. 2.1 - Translate from algebra to words. 4719 (b) 729 (c)...Ch. 2.1 - Translate from algebra to words. 1427 (b) 1928 (c)...Ch. 2.1 - Translate from algebra to words. 1915 (b) 7=125...Ch. 2.1 - Use Figure 2.2 to fill in the appropriate symbol....Ch. 2.1 - Use Figure 2.2 to fill in the appropriate symbol....Ch. 2.1 - Determine if each is an expression or an equation:...Ch. 2.1 - Determine if each is an expression or an equation:...Ch. 2.1 - Write each expression in exponential form:...Ch. 2.1 - Write each expression in exponential form:...
Ch. 2.1 - Write each exponential expression in expanded...Ch. 2.1 - Write each exponential expression in expanded...Ch. 2.1 - Simplifư: 53 (b) 17Ch. 2.1 - Simplify: 72 (b) 05Ch. 2.1 - Simplify the expressions: 1252 (b) (125)2Ch. 2.1 - Simplify the expressions: 8+39 (b) (8+3)9Ch. 2.1 - Simplify: 4273Ch. 2.1 - Simplify: 1234Ch. 2.1 - Simplify: 305+10(32)Ch. 2.1 - Simplify: 7010+4(62)Ch. 2.1 - Simplify: 9+53[4(9+3)]Ch. 2.1 - Simplify: 722[4(5+1)]Ch. 2.1 - Simplify: 32+242+43Ch. 2.1 - Simplify: 62535+82Ch. 2.1 - In the following exercises, translate from...Ch. 2.1 - In the following exercises, translate from...Ch. 2.1 - In the following exercises, translate from...Ch. 2.1 - In the following exercises, translate from...Ch. 2.1 - In the following exercises, translate from...Ch. 2.1 - In the following exercises, translate from...Ch. 2.1 - In the following exercises, translate from...Ch. 2.1 - In the following exercises, translate from...Ch. 2.1 - In the following exercises, translate from...Ch. 2.1 - In the following exercises, translate from...Ch. 2.1 - In the following exercises, translate from...Ch. 2.1 - In the following exercises, translate from...Ch. 2.1 - In the following exercises, translate from...Ch. 2.1 - In the following exercises, translate from...Ch. 2.1 - In the following exercises, translate from...Ch. 2.1 - In the following exercises, translate from...Ch. 2.1 - In the following exercises, translate from...Ch. 2.1 - In the following exercises, translate from...Ch. 2.1 - In the following exercises, translate from...Ch. 2.1 - In the following exercises, translate from...Ch. 2.1 - In the following exercises, translate from...Ch. 2.1 - In the following exercises, translate from...Ch. 2.1 - In the following exercises, translate from...Ch. 2.1 - In the following exercises, determine if each is...Ch. 2.1 - In the following exercises, determine if each is...Ch. 2.1 - In the following exercises, determine if each is...Ch. 2.1 - In the following exercises, determine if each is...Ch. 2.1 - In the following exercises, determine if each is...Ch. 2.1 - In the following exercises, determine if each is...Ch. 2.1 - In the following exercises, determine if each is...Ch. 2.1 - In the following exercises, write in exponential...Ch. 2.1 - In the following exercises, write in exponential...Ch. 2.1 - In the following exercises, write in exponential...Ch. 2.1 - In the following exercises, write in exponential...Ch. 2.1 - In the following exercises, write in expanded...Ch. 2.1 - In the following exercises, write in expanded...Ch. 2.1 - In the following exercises, write in expanded...Ch. 2.1 - In the following exercises, write in expanded...Ch. 2.1 - In the following exercises, simplify. 39. (a) 3+85...Ch. 2.1 - In the following exercises, simplify. (a) 2+63 (b)...Ch. 2.1 - In the following exercises, simplify. 2312(95)Ch. 2.1 - In the following exercises, simplify. 3218(115)Ch. 2.1 - In the following exercises, simplify. 38+52Ch. 2.1 - In the following exercises, simplify. 47+35Ch. 2.1 - In the following exercises, simplify. 2+8(6+1)Ch. 2.1 - In the following exercises, simplify. 4+6(3+6)Ch. 2.1 - In the following exercises, simplify. 412/8Ch. 2.1 - In the following exercises, simplify. 236/6Ch. 2.1 - In the following exercises, simplify. 6+10/2+2Ch. 2.1 - In the following exercises, simplify. 9+12/3+4Ch. 2.1 - In the following exercises, simplify. (6+10)(2+2)Ch. 2.1 - In the following exercises, simplify. (9+12)(3+4)Ch. 2.1 - In the following exercises, simplify. 204+65Ch. 2.1 - In the following exercises, simplify. 333+82Ch. 2.1 - In the following exercises, simplify. 20(4+6)5Ch. 2.1 - In the following exercises, simplify. 33(3+8)2Ch. 2.1 - In the following exercises, simplify. 42+52Ch. 2.1 - In the following exercises, simplify. 32+72Ch. 2.1 - In the following exercises, simplify. (4+5)2Ch. 2.1 - In the following exercises, simplify. (3+7)2Ch. 2.1 - In the following exercises, simplify. 3(1+96)42Ch. 2.1 - In the following exercises, simplify. 5(2+84)72Ch. 2.1 - In the following exercises, simplify. 2[1+3(102)]Ch. 2.1 - In the following exercises, simplify. 5[2+4(32)]Ch. 2.1 - Basketball In the 2014 NBA playoffs, the San...Ch. 2.1 - Elevation In Colorado there are more than 50...Ch. 2.1 - Explain the difference between an expression and...Ch. 2.1 - Why is it important to use the order of operations...Ch. 2.2 - Evaluate: y+4when (a) y=6 (b) y=15Ch. 2.2 - Evaluate: a5When (a) a=9 (b) a=17Ch. 2.2 - Evaluate: 8x3,when (a) x=2 (b) x=1Ch. 2.2 - Evaluate: 4y4,when y=3(b) y=5Ch. 2.2 - Evaluate: x2when x=8.Ch. 2.2 - Evaluate: x3when x=6.Ch. 2.2 - Evaluate: 2xWhen x=6.Ch. 2.2 - Evaluate: 3xWhen x=4.Ch. 2.2 - Evaluate: 2x+5y4when x=11and ? y=3Ch. 2.2 - Evaluate: 5x2y9when x=7and y=8Ch. 2.2 - Evaluate: 3x2+4x+1when x=3.Ch. 2.2 - Evaluate: 6x24x7when x=2.Ch. 2.2 - Identify all terms in the given expression, and...Ch. 2.2 - Identify all terms in the given expression, and...Ch. 2.2 - Identify the like terms in the list or the...Ch. 2.2 - Identify the like terms in the list or the...Ch. 2.2 - Simplify: 7x+9+9x+8Ch. 2.2 - Simplify: 5y+2+8y+4y+5Ch. 2.2 - Simplify: 3x2+9x+x2+5xCh. 2.2 - Simplify: 11y2+8y+y2+7yCh. 2.2 - Translate the given word phrase into an algebraic...Ch. 2.2 - Translate the given word phrase into an algebraic...Ch. 2.2 - Translate the given word phrase into an algebraic...Ch. 2.2 - Translate each word phrase into an algebraic...Ch. 2.2 - Translate each word phrase into an algebraic...Ch. 2.2 - Translate each word phrase into an algebraic...Ch. 2.2 - The length of a rectangle s 5inches less than the...Ch. 2.2 - The width of a rectangle is 2meters greater than...Ch. 2.2 - Geoffrey has dimes and quarters in his pocket. 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TRY IT :: 2.68 Solve: 27=n14Ch. 2.3 - TRY IT :: 2.69 Translate the sentence into an...Ch. 2.3 - TRY IT :: 2.70 Translate the sentence into an...Ch. 2.3 - TRY IT :: 2.71 Translate the sentence into an...Ch. 2.3 - TRY IT :: 2.72 Translate the sentence into an...Ch. 2.3 - TRY IT :: 2.73 Translate the given sentence into...Ch. 2.3 - TRY IT :: 2.74 Translate the given sentence into...Ch. 2.3 - TRY IT :: 2.75 Translate and solve: Seven more...Ch. 2.3 - TRY IT :: 2.76 Translate and salve: Eleven more...Ch. 2.3 - TRY IT :: 2.77 Translate and solve: The difference...Ch. 2.3 - TRY IT :: 2.78 Translate and solve: The difference...Ch. 2.3 - In the following exercises, determine whether each...Ch. 2.3 - âIn the following exercises, determine whether...Ch. 2.3 - In the following exercises, determine whether each...Ch. 2.3 - In the following exercises, determine whether each...Ch. 2.3 - In the following exercises, determine whether each...Ch. 2.3 - In the following exercises, determine whether each...Ch. 2.3 - 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Then make up a...Ch. 2.4 - TRY IT :: 2.79 Determine whether each number is a...Ch. 2.4 - TRY IT :: 280 Determine whether each number is a...Ch. 2.4 - TRY lT :: 2.81 Determine whether each number is a...Ch. 2.4 - TRY IT :: 282 determine whether each number is a...Ch. 2.4 - TRY IT :: Determine whether each number is a...Ch. 2.4 - TRY IT :: 2.84 Determine whether each number is a...Ch. 2.4 - TRY IT :: 2.85 Determine whether each number is a...Ch. 2.4 - TRY IT :: 286 Determine whether each number is a...Ch. 2.4 - TRY IT :: 2.87 Determine whether the given number...Ch. 2.4 - TRY IT :: 2.88 Determine whether the given number...Ch. 2.4 - TRY IT :: 2.89 Determine whether the given number...Ch. 2.4 - TRY IT :: 2.90 Determine whether the given number...Ch. 2.4 - TRY IT :: 2.91 Find all the factors of the given...Ch. 2.4 - TRY IT :: 2.92 Find all the factors of the given...Ch. 2.4 - TRY IT :: 2.93 Identify the number as prime or...Ch. 2.4 - TRY IT :: 2.94 Identify the number as prime or...Ch. 2.4 - In the following exercises, list all the multiples...Ch. 2.4 - In the following exercises, list all the multiples...Ch. 2.4 - In the following exercises, list all the multiples...Ch. 2.4 - In the following exercises, list all the multiples...Ch. 2.4 - In the following exercises, list all the multiples...Ch. 2.4 - In the following exercises, list all the multiples...Ch. 2.4 - In the following exercises, list all the multiples...Ch. 2.4 - In the following exercises, list all the multiples...Ch. 2.4 - In the following exercises, list all the multiples...Ch. 2.4 - In the following exercises, list all the multiples...Ch. 2.4 - In the following exercises, use the divisibility...Ch. 2.4 - In the following exercises, use the divisibility...Ch. 2.4 - In the following exercises, use the divisibility...Ch. 2.4 - In the following exercises, use the divisibility...Ch. 2.4 - In the following exercises, use the divisibility...Ch. 2.4 - In the following exercises, use the divisibility...Ch. 2.4 - In the following exercises, use the divisibility...Ch. 2.4 - In the following exercises, use the divisibility...Ch. 2.4 - In the following exercises, use the divisibility...Ch. 2.4 - In the following exercises, use the divisibility...Ch. 2.4 - In the following exercises, use the divisibility...Ch. 2.4 - In the following exercises, use the divisibility...Ch. 2.4 - In the following exercises, use the divisibility...Ch. 2.4 - In the following exercises, use the divisibility...Ch. 2.4 - In the following exercises, use the divisibility...Ch. 2.4 - In the following exercises, use the divisibility...Ch. 2.4 - In the following exercises, use the divisibility...Ch. 2.4 - In the following exercises, use the divisibility...Ch. 2.4 - In the following exercises, find all the factors...Ch. 2.4 - In the following exercises, find all the factors...Ch. 2.4 - In the following exercises, find all the factors...Ch. 2.4 - In the following exercises, find all the factors...Ch. 2.4 - In the following exercises, find all the factors...Ch. 2.4 - In the following exercises, find all the factors...Ch. 2.4 - In the following exercises, find all the factors...Ch. 2.4 - In the following exercises, find all the factors...Ch. 2.4 - In the following exercises, determine if the given...Ch. 2.4 - In the following exercises, determine if the given...Ch. 2.4 - In the following exercises, determine if the given...Ch. 2.4 - In the following exercises, determine if the given...Ch. 2.4 - In the following exercises, determine if the given...Ch. 2.4 - In the following exercises, determine if the given...Ch. 2.4 - In the following exercises, determine if the given...Ch. 2.4 - In the following exercises, determine if the given...Ch. 2.4 - In the following exercises, determine if the given...Ch. 2.4 - In the following exercises, determine if the given...Ch. 2.4 - In the following exercises, determine if the given...Ch. 2.4 - In the following exercises, determine if the given...Ch. 2.4 - Banking. 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