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| fraction part of a number |
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| percents greater then 100 |
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| the of number is greater when the percent is 100%. Whenever the is number is we get a percent higher than 100% |
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forms for percent equation |
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a=a 7=A 70=2a=35 d=d 2=10 2 =2 |
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p=p to1=pto4 m=m to2=mtom (8) |
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volume of right solid (red) surface Area(blue)(p.217) |
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the area of the base times the height of the solid ∏(r)2 lateral surface area(area of the sides) |
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<&>=no fill circle ≤&≥=fill in circle |
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| adding () with negitive and positive numbers |
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| numbers that are inclosed in () can be added in any order. people eather start with positve or negitive numbers then add the sum |
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From the pattern above, we can induce that when there is an even number or negetive facters, the answer is positive when there is an odd number or negetive facters, the answer is negetive |
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| To subtract algebraiclly, we change the sign of the sudtrahend and add. |
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| rules for multiplucation division of singned numbers |
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1.the answer is a positive number if the signs of the numbers are alike. 2.the answer is a negetive number if the signs of the numbers are different. |
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4(2+3) 4(2+3) 4(5) 4*2+4*3 20 8+12 20 |
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powers with negative bases |
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-22 (-2)2 (-2)(2) (-2)(-2) |
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| roots of negitive nunbers |
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negetives do not have positive square roots. but negative numbers have odd negitive roots. |
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symbal I V X L C D M
value 1 5 10 50 100 500 1000 |
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