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Maths, Addmaths and Statistics: Post your doubts here!

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Try some complex figures like 753/4 and this method will be good enough !
These simple calculations can be verified so you don't need to worry about them !
i dont have problem in these divisions until and unless that extra zero thing comes in between
 
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You only add the zero after adding the decimal. For the rest, simply subtract what you write.
 
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HHAHAHAHAHAHAH who taught you dividing like this ? :D LOL
Who told u like this? Everything we divide like this. There is some rule which we dont now. My method is correct. Only problem is t
That there is some rule.
Divide anything this way it will work. Except when first digit is same as divisor and second digit is less than devisor.
 
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To complete the division or simplify it until it no longer divides.
What do u mean by no longer divide. 2 divided by 2 is 1 remainder is zero. Bring 1 down then add decimal because 1 is less than 2.
The method had no flaws according to what i know about this long division(real name of this method)
 
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Divide anything this way it will work. Except when first digit is same as divisor and second digit is less than divisor.
Thr conclusion at which i have arrived.
 
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What do u mean by no longer divide. 2 divided by 2 is 1 remainder is zero. Bring 1 down then add decimal because 1 is less than 2.
The method had no flaws according to what i know about this long division(real name of this method)

I know the name. -_-
 
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Area of shaded region = 72/360 (pi) (R)^2 - (pi)(r)^2
Area of small circle = (pi)(r)^2
They are equal so,
72/360 (pi) (R)^2 - (pi)(r)^2 = (pi)(r)^2
72/360 (pi) (R)^2 = 2 (pi)(r)^2
Simplifying,
R^2/r^2 = 360*2/72
R^2/r^2 = 10/1
Therefore,
R^2 : r^2 = 10 : 1
Hope that helps! :)

Thank you! but where did the 72 come from? o_O
 
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a tank can be filled by two pipes in one hour and 20 minutes.if the two pipes are to fill the tank individually the smaller pipe will take two more hours more than the bigger piper to do so.find the time each pipe will take to fill the tank differently??? plzz solve n help?!
 
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in the marking scheme, unlike bio/physics/chemistry, one very strict value is given..and often i get values slightly different. for example i get 4.27 and marking scheme says (Strictly) '4.28' dafuq to do??
 
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Get the latest calculator? My sin and cos values are very different in both of my calculators. I use the latest model and the answers are exactly as given in Marking Scheme.
 
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Get the latest calculator? My sin and cos values are very different in both of my calculators. I use the latest model and the answers are exactly as given in Marking Scheme.

try to reset ur calculator. Maybe ur calculator is set on radians instead of degree
 
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in the marking scheme, unlike bio/physics/chemistry, one very strict value is given..and often i get values slightly different. for example i get 4.27 and marking scheme says (Strictly) '4.28' dafuq to do??


This happens due to premature rounding off.

try to reset ur calculator. Maybe ur calculator is set on radians instead of degree


The value difference between radians and degrees is way too much. Not a few decimals here and there.
 
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