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Mathematics: Post your doubts here!

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found it in the addendum. thank you. i am doing the IGCSE's not O level thats why i thought this book is not the one to look at. but surprisingly enough the O level books i find are much better than IGCSE ones.


Im also doing IGCSE's but this book is what i studied for preparation IGCSE's books arent much helpful.. By the way u are welcome.. ;)
 
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Q4.d = 30/120 * 29/119 = 0.0609
(30/120 because there are 30 children with heights b/w 150-155... and 20/119 because 1 children is deducted as he is chosen as the 1st child.. )

Q24.iii = 7/50 * 6/49= 0.0171 (50 is the total number of children. this question needs to be solved in a similar way to the previous one)
 
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Q4.d = 30/120 * 29/119 = 0.0609
(30/120 because there are 30 children with heights b/w 150-155... and 20/119 because 1 children is deducted as he is chosen as the 1st child.. )
yeah i also thought tht but in the ms something wierd is given...and only one mark is given if we do this....
 
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How am I supposed to
"Write down an equation in x and show that it simplifies to 2x^2 – 3x– 27 = 0" -0580_S13_42
Having hard time in Algebra..
 
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p18m00695anrgp3m100h1c0q1bhj3.png
Use= v-u/t
15-0/5=3
15m/s is the initial velocity of the car
0m/s is final velocity of the car
5s is time take for the car to stop (Taken from the graph 35-30)
 
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My Name ..
Q15:
find the distance of two rectangles, a trapezium and a triangle... in short find the area under graph...
distance= (25*10)+(1/2*25+15*10)+(10*15)+(1/2*5*15)
simplify it.. :)
 
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