# 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
 Author: shockwave ID: 262634 Card Set: TAP MATH 2 Updated: 2014-03-02 00:02:56 Tags: TAP MATH Folders: TAP MATH 2 Description: TAP MATH 2 Show Answers: