TAP MATH 2

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Author:
shockwave
ID:
262634
Filename:
TAP MATH 2
Updated:
2014-03-01 19:02:56
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TAP MATH
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TAP MATH 2
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TAP MATH 2
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  1. NEGATIONS FOR
    A OR B
    A AND B
    IFTHEN B

    FOR ALL x, A(x)

    THERE EXISTS X SUCH THAT A(x)"
    • "A or B"      "not A and not B"
    • "A and B"    "not A or not B"
    • "if A, then B"      "A and not B"

    • "For all x, A(x)"
    • "There exist x such that not A(x)"

    • "There exists x such that A(x)"
    • "For every x, not A(x)"
    • 1. A CIRCLE IS 360
    • 2. ARC = 20
    • 3 SO, WHAT IS 20 /360= 1/18
    • 4. WHATS 1/18 OF 72? 1/18 * 72/1= 4
  2. A 20L SAMPLE OF WATER CONTAINS 1L OF POLLUTION. WHAT PERCENT OF THE SAMPLE IS POLLUTION?
    1 / 20 = .05 = 5%

    • DIVIDE THE WHOLE INTO THE PART TO GET PERCENT.
    • YOUR SAMPLE IS 20. THE 1L IS WHAT YOUR PERCENTAGE IS COMING FROM. 20 IS THE WHOLE AND 1 IS THE PART. WHEN YOU DIVIDE 1 BY 20 YOU ARE GETTING A DECIMAL OR PART OF THE 20. THEN JUST CONVERT DECIMAL INTO PERCENT.
  3. CONVERT 3.2 INTO A FRACTION
    3 2/10 = 3 1/5 (REDUCE!)

    • COUNT THE DECIMAL PLACES.
    • EACH DECIMAL NUMERAL CAN BE CHANGED TO A FRACTION JUST BY WRITING THE NUMBER IN FRACTION FORM AS IT READS.
  4. WHATS GREATER?

    3/4 OR 2/3
    • 1. FIND COMMON DENOMINATOR AND COMPARE.
    • 3 = 9    AND 2 = 8
    • 4   12          3    12

    9/12 > 8/12
  5. (-5) - (+8) =?
    (-3) - (-4) = ?
    • (-5) + (-8) = -13
    • (-3) + (+4) = +1
    • remember to change the sign and the 2nd integers property.
  6. 85 = R * 2 1/2
    GET RID OF THE 2 1/2
    • 1. CONVERT INTO IMPROPER FRACTION (5/2)
    • 2. DIVIDE BOTH SIDES RECIPROCAL (2/5). 
    • REMEMBER THAT MEANS THAT YOU FLIP THE ORIGINAL (5/2) AND MULTIPLY IT 
    • 2/5 * 5/2 = 1/1 = 1
  7. 100 CM = ? M
    100 CM = 1M

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