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This module is from Elementary Algebra by Denny Burzynski and Wade Ellis, Jr. The basic operations with real numbers are presented in this chapter. The concept of absolute value is discussed both geometrically and symbolically. The geometric presentation offers a visual understanding of the meaning of |x|. The symbolic presentation includes a literal explanation of how to use the definition. Negative exponents are developed, using reciprocals and the rules of exponents the student has already learned. Scientific notation is also included, using unique and real-life examples.This module contains the exercise supplement for the chapter "Basic Operations with Real Numbers".

Exercise supplement

Signed numbers ( [link] )

For the following problems, find a if a is

Absolute value ( [link] )

Simplify the following problems.

Addition of signed numbers ( [link] ) - multiplication and division of signed numbers ( [link] )

Simplify the following problems.

( 2 ) ( 4 ) + 10 5

18 5

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3 ( 8 + 4 ) 12 4 ( 3 + 6 ) 2 ( 8 )

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1 ( 3 2 ) 4 ( 4 ) 13 + 10

7

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0 6 ( 4 ) ( 2 )

48

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Multiplication and division of signed numbers ( [link] )

Find the value of each expression for the following problems.

P = R C . Find P if R = 3000 and C = 3800 .

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z = x u s . Find z if x = 22 , u = 30 , and s = 8 .

1

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P = n ( n 1 ) ( n 2 ) . Find P if n = 3 .

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Negative exponents ( [link] )

Write the expressions for the following problems using only positive exponents.

a 3 b 2 c 5

a 3 b 2 c 5

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x 3 y 2 ( x 3 ) 7

x 3 y 2 ( x 3 ) 7

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4 2 a 3 b 4 c 5

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( 2 x + 9 ) 3 7 x 4 y 5 z 2 ( 3 x 1 ) 2 ( 2 x + 5 ) 1

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7 x y 3 z 2

7 x y 3 z 2

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3 2 a 5 b 9 c 2 x 2 y 4 z 1

c 2 y 4 z 9 a 5 b 9 x 2

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( z 6 ) 2 ( z + 6 ) 4

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16 a 5 b 2 2 a 3 b 5

8 a 2 b 3

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44 x 3 y 6 z 8 11 x 2 y 7 z 8

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( a 2 b ) 3

1 a 6 b 3

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( x 3 y 4 z 2 ) 6

y 24 z 12 x 18

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( x 6 y 2 ) 5

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( 2 b 7 c 8 d 4 x 2 y 3 z ) 4

b 28 c 32 y 12 z 4 16 d 16 x 8

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Scientific notation ( [link] )

Write the following problems using scientific notation.

0.000000000000537

5.37 × 10 13

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Convert the following problems from scientific form to standard form.

6.009 × 10 7

60 , 090 , 000

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3.88 × 10 5

0.0000388

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8.002 × 10 12

0.000000000008002

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2.101 × 10 15

2 , 101 , 000 , 000 , 000 , 000

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1 × 10 9

1 , 000 , 000 , 000

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Find the product for the following problems. Write the result in scientific notation.

( 1 × 10 5 ) ( 2 × 10 3 )

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( 3 × 10 6 ) ( 7 × 10 7 )

2.1 × 10 14

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( 2 × 10 14 ) ( 8 × 10 19 )

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( 9 × 10 2 ) ( 3 × 10 75 )

2.7 × 10 78

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( 1 × 10 4 ) ( 1 × 10 5 )

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( 8 × 10 3 ) ( 3 × 10 6 )

2.4 × 10 8

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( 9 × 10 5 ) ( 2 × 10 1 )

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( 3 × 10 2 ) ( 7 × 10 2 )

2.1 × 10 1

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( 7.3 × 10 4 ) ( 2.1 × 10 8 )

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( 1.06 × 10 16 ) ( 2.815 × 10 12 )

2.9839 × 10 28

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( 9.3806 × 10 52 ) ( 1.009 × 10 31 )

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Questions & Answers

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the transfer of energy by a force that causes an object to be displaced; the product of the component of the force in the direction of the displacement and the magnitude of the displacement
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Show that the equal masses particles emarge from collision at right angle by making explicit used of fact that momentum is a vector quantity
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A wave is described by the function D(x,t)=(1.6cm) sin[(1.2cm^-1(x+6.8cm/st] what are:a.Amplitude b. wavelength c. wave number d. frequency e. period f. velocity of speed.
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A body is projected upward at an angle 45° 18minutes with the horizontal with an initial speed of 40km per second. In hoe many seconds will the body reach the ground then how far from the point of projection will it strike. At what angle will the horizontal will strike
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Suppose hydrogen and oxygen are diffusing through air. A small amount of each is released simultaneously. How much time passes before the hydrogen is 1.00 s ahead of the oxygen? Such differences in arrival times are used as an analytical tool in gas chromatography.
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the science concerned with describing the interactions of energy, matter, space, and time; it is especially interested in what fundamental mechanisms underlie every phenomenon
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nuclei having the same Z and different N s
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Source:  OpenStax, Elementary algebra. OpenStax CNX. May 08, 2009 Download for free at http://cnx.org/content/col10614/1.3
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