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1.03 Calculators Intermediate Algebra: One Step at a Time, Page 27-38: #18, 25, 35, 37. Dr. Robert J. Rapalje Seminole State College of Florida Sanford, FL 32773
To see Section 1.03, with explanations, examples, exercises, and answers, click here!
NOTE:
In
the following exercises, you may wish to enter the numbers and operations
into the calculator exactly as indicated in the exercise. However, if you
have a scientific notation button on your calculator
[EE],
then you may save a few keystrokes. Enter the keystrokes that will be given
within brackets into the calculator. Of course there will be variations
based upon different calculators. You can send me an Email and tell me what
calculator you are using, and I will try to be more specific for your
calculator. If your calculator does NOT have the carat symbol
[^] for raising to the power, then look for
[ p. 38.
18.
Solution #1: Type directly as it is given. [( ] [7.2] [x] [10] [^] [12] [) ] [÷] [( ] [3.5] [x] [10] [^] [5] [) ] [^] [-] [3] [ENTER]
The answer should be
Solution #2: Using the scientific notation button [EE]. [( ] [7.2] [EE] [12] [) [÷] [( ] [3.5 [EE] [-] [4] [) ] [ENTER]
The answer should be NOTE: In this case, using the [EE] button, parentheses are NOT needed! However, be careful for problems like #25-30, in which parentheses ARE required!!
25.
In this exercise, you will be well served to place parentheses around the numerator and denominator, and use the [EE] notation. Caution: be sure to use parentheses at the beginning and end of the entire fraction, and NOT in between!! It should look like this:
[( ] [7.2] [EE] [12] [x] [6.3] [EE] [-] [8] [) [÷] [( ] [3.5 [EE] [-] [4] [) ] [x] [8.1] [EE] [14] [)] [ENTER]
The answer should be
35.
Solution #1: Type directly as it is given. [( ] [7.2] [x] [10] [^] [12] [) ] [^] [2] [x] [( ] [6.3] [x] [10] [^] [5] [) ] [^] [3] [ENTER]
The answer should be
Solution #2: Using the scientific notation button [EE]. [( ] [7.2] [EE] [12] [) ] [^] [2] [•] [( ] [6.3] [EE] [5] [) ] [^] [3] [ENTER]
The answer should be
37.
Solution #1: Type directly as it is given. [( ] [6.3] [x] [10] [^] [-] [8] [) ] [^] [3] [÷] [( ] [8.1] [x] [10] [^] [14] [) ] [^] [2] [ENTER]
The answer should be
Solution #2: Using the scientific notation button [EE]. [( ] [6.3] [EE] [-] [8] [) ] [^] [3] [÷] [( ] [8.1] [EE] [14] [) ] [^] [2] [ENTER]
The answer should be
[NOTE: With different calculators there WILL be variations. Send me an Email for clarifications about YOUR calculator!!]
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