PREALGEBRA
15th Edition
ISBN: 9781938168994
Author: OpenStax
Publisher: OpenStax
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Textbook Question
Chapter 2.1, Problem 46E
In the following exercises, simplify.
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Question 1. Solve the system
-
x1 x2 + 3x3 + 2x4
-x1 + x22x3 + x4
2x12x2+7x3+7x4
Question 2. Consider the system
= 1
=-2
= 1
3x1 - x2 + ax3
= 1
x1 + 3x2 + 2x3
x12x2+2x3
= -b
= 4
1 For what values of a, b will the system be inconsistent?
2 For what values of a, b will the system have only one solution?
For what values of a, b will the saystem have infinitely many solutions?
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. 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(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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