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Basic Math & Pre-Algebra All-in-One For Dummies (+ Chapter Quizzes Online). Mark ZegarelliЧитать онлайн книгу.

Basic Math & Pre-Algebra All-in-One For Dummies (+ Chapter Quizzes Online) - Mark  Zegarelli


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by using the answer to c.)

      20 Solve these exponents.

      (a) math

      (b) math

      (c) math

      1

      (a) math

      (b) math

      (c) math

      (d) math

      2

      (a) math

      (b) math

      (c) math

      (d) math

      3

      (a) math

      (b) math

      (c) math

      (d) math

      4

      (a) 110. Rewrite math as its inverse: math. Therefore, math

      (b) 15. Rewrite math as its inverse: math So, math.

      (c) 87. Rewrite math using the commutative property: math. Now rewrite this equation as its inverse: math. Therefore, math.

      (d) 203. Rewrite math by switching around the two numbers next to the equal sign: math. So, math.

      (e) 81. Rewrite math using the commutative property: math. Now rewrite this equation as its inverse: math. So, math.

      (f) 20. Rewrite math by switching around the two numbers next to the equals sign: math. So, math.

      5 58. First, do the multiplication inside the parentheses:

math

      Now add: math.

      6 123. First, do the subtraction inside the parentheses:

math

      7

      (a) math

      (d) math

      Yes, the placement of parentheses changes the result.

      8

      (a) math

      (b) math

      No, because of the associative property of addition, the placement of parentheses doesn’t change the result.

      9

      (a) math

      (b) math

      No, because of the associative property of multiplication, the placement of parentheses doesn’t change the result.

      10 937,690. The problem is easiest to solve by placing parentheses around math:

math

      11 math

      12 math

      13 Скачать книгу

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