Maths, Addmaths and Statistics: Post your doubts here!

[asadalam]

View attachment 43814

And cos of x will be equal to -(180-x) or x-180 ^^

 

[Dark Destination]

And cos of x will be equal to -(180-x) or x-180 ^^

Exactly. That's what maths is.

 

[FLRNAB]

And abt those estimation question queries of mine?Maths, Addmaths and Statistics: Post your doubts here!
question of reference is in oct nov 2013 ppr in this post..

Ok so we will definately downgrade to 6 in the denominator. Now in these questions you want to find the simplest easiest way.
underoot 9 will give you 3 which will divide 6 in denominator to give you 2 in denominator. 39 is not that good number to divide by 2 but 40 is just juiicy.

It depends on the question also remember if your answer has decimal places you might be doin it wrong.

 

[mohammad ahmed]

http://papers.xtremepapers.com/CIE/...Calculator Version) (4024)/4024_s13_qp_11.pdf

16a
6/9=x/66

iam doing this but aint getting the right answer pllzz help?

 

[M.Omar]

Oh my! Such Genius!

http://papers.xtremepapers.com/CIE/...culator Version) (4024)/4024_s08_ms_1.pdfjust just confirming...In the fraction question where they ask us to write in simplest form ..the denominator can be expanded and ot in factorized form .right? Q15

 

[kirann]

can somebody explain part a
i did 6*66/9=44
but answer is wrong m.s says its 4...

 

[Dark Destination]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Mathematics D (Calculator Version) (4024)/4024_s13_qp_11.pdf

16a
6/9=x/66

iam doing this but aint getting the right answer pllzz help?

You are right.
The marking scheme is wrong.

 

[mohammad ahmed]

You are right.
The marking scheme is wrong.

oh ok

 

[Dark Destination]

can somebody explain part a
i did 6*66/9=44
but answer is wrong m.s says its 4...
View attachment 43815

You are right.
The marking scheme is wrong.

^

 

[asadalam]

And cos of x will be equal to -(180-x) or x-180 ^^

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Mathematics D (Calculator Version) (4024)/4024_s13_qp_11.pdf

16a
6/9=x/66

iam doing this but aint getting the right answer pllzz help?

I recall the ans is wrong in ms.

 

[M.Omar]

Ok so we will definately downgrade to 6 in the denominator. Now in these questions you want to find the simplest easiest way.
underoot 9 will give you 3 which will divide 6 in denominator to give you 2 in denominator. 39 is not that good number to divide by 2 but 40 is just juiicy.

It depends on the question also remember if your answer has decimal places you might be doin it wrong.

thnx

 

[Bilal Kamal]

can somebody explain part a
i did 6*66/9=44
but answer is wrong m.s says its 4...
View attachment 43815

your answer is correct, the answer in the marking scheme is wrong

 

[Dark Destination]

What is ECF? Can someone explain :/

I mean, if i get one answer wrong, will i get full marks for the one that depended on that answer?

 

[***amd***]

It's like hypotenues, 8^2+6^2 = Magnitutde ^2

pathagoras theorum? hows it applicable here?

YUP , it is!

no, only matrices of order 2 * 2 are in syllabus.

 

[FLRNAB]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Mathematics D (Calculator Version) (4024)/4024_s08_ms_1.pdfjust just confirming...In the fraction question where they ask us to write in simplest form ..the denominator can be expanded and ot in factorized form .right? Q15

Upgrade 8 to 9 and downgrade 2.04 to 2 and upgrade 0.2 to 0.3
Remove the decimal from 0.3 (10 multiplied in the numerator)
9/3 = 3 x 2 x2 = 6x2 = 12 x 10 = 120

 

[FLRNAB]

pathagoras theorum? hows it applicable here?

no, only matrices of order 2 * 2 are in syllabus.

Don't believe CIE will only give stuff within the syllabus. In chem atp they asked the color of some salt which was not in syllabus.

 

[asadalam]

What is ECF? Can someone explain :/

I mean, if i get one answer wrong, will i get full marks for the one that depended on that answer?

Yes error carried forward,and no marks will be cut in the following if your procedure is correct.

 

[M.Omar]

Upgrade 8 to 9 and downgrade 2.04 to 2 and upgrade 0.2 to 0.3
Remove the decimal from 0.3 (10 multiplied in the numerator)
9/3 = 3 x 2 x2 = 6x2 = 12 x 10 = 120

No I am talking abt question 15 in qp 2008 m/j http://papers.xtremepapers.com/CIE/...(Calculator Version) (4024)/4024_s08_ms_1.pdf same question tht caN we write den in expanded form

 

[***amd***]

How to describe a locus ? :s

Mathematics . the set of all points, lines, or surfaces that satisfy a given requirement.
^according to dictionary.reference.com
though i would define it as, the course of line, whose corresponding point is equidistant from a point or a set of points.

 

[mohammad ahmed]

http://papers.xtremepapers.com/CIE/...Calculator Version) (4024)/4024_s12_qp_11.pdf
iam doing this papaer onlone and wanted to confirm answer of Q1a and b
so anyone can draw pllzzz?