Maths D 22

[Heyyy]

It was 990 and there is a big difference b/w 990 and 975 so I used Pythagoras. Anyways, both should be correct.

Yes.
I did both.
They won't deduct any marks I guess because they never specified that we cannot use the scale.

 

[Saad Mughal]

Yes.
I did both.
They won't deduct any marks I guess because they never specified that we cannot use the scale.

But that's what Calculate means.

 

[Saad Mughal]

it was 975

I disagree.

 

[Saad Mughal]

6.5cm*150= 975m

BC = Underroot (1800^2-1500^2) = 995 m.

 

[Saad Mughal]

i guess they might correct it cox in marking scheme they mention special case = 995 or 975

Yeah I know. That's why I said. Both are correct.

 

[Mohammad Farzanullah]

Hero's Law is not applicable in CIE.
Secondly,it is giving different answers and compound interest is not included in the syllabus so I guess that's wrong

hero method is allowed in CIE!
it is in the marking scheme of winter 12 paper question 7 (ii) !
http://papers.xtremepapers.com/CIE/Cambridge International O Level/Mathematics - Additional (4037)/4037_w12_ms_12.pdf

 

[danial 234]

But that's what Calculate means.

calculate can also mean measuring the distance and then multiplying it by 150 to get ans

 

[Saad Mughal]

calculate can also mean measuring the distance and then multiplying it by 150 to get ans

It's written in the examiner tips that answers by accurate drawing (calculate) will not be accepted. Khair, it doesn't make a difference.

 

[danial 234]

It's written in the examiner tips that answers by accurate drawing (calculate) will not be accepted. Khair, it doesn't make a difference.

can u give an example of any such er or ms

 

[Saad Mughal]

can u give an example of any such er or ms

Not er or ms. The examiner tips released by the CIE. Wait. I'll send you the link.

 

[Saad Mughal]

http://www.cambridgestudents.org.uk...aminer_Tips_for_OL_Mathematics_4024_FINAL.pdf

 

[Muqeet Tahir Malik]

Yar I found 120 percent of the total cost by mistake,I think my only 1 mark will be deducted ,what guys say

 

[Mohammad Farzanullah]

surface area of prism kya tha??? i forgot abhi tak 3 marks lost cant believe it!

610

 

[mohdumar]

It's written in the examiner tips that answers by accurate drawing (calculate) will not be accepted. Khair, it doesn't make a difference.

Mannn....., i had to cut out my 1005 answer from drawing and calculate (after realizing it was an emboldened keyword) which gave 995... phew!!!!

 

[Snowysangel]

Listen when the speed of an object and its direction in VECTOR FORM is given, how do we find the velocity vector and why? And could we derive a velocity vector if only the bearing if the object and its speed are given? If so how?

 

[Snowysangel]

hero method is allowed in CIE!
it is in the marking scheme of winter 12 paper question 7 (ii) !
http://papers.xtremepapers.com/CIE/Cambridge International O Level/Mathematics - Additional (4037)/4037_w12_ms_12.pdf

Why wound anyone use that for that question? You have to calculate all the sides first to use Heron's formula :S

 

[Snowysangel]

Listen when the speed of an object and its direction in VECTOR FORM is given, how do we find the velocity vector and why? And could we derive a velocity vector if only the bearing if the object and its speed are given? If so how?

Like in j12 p1 Q12. Why can't we take the 3i + 4j as the velocity vector?

 

[Mohammad Farzanullah]

How did that answer came?

2 base area + (perimeter of base * length)

 

[Mohammad Farzanullah]

Why wound anyone use that for that question? You have to calculate all the sides first to use Heron's formula :S

not all sides! all cordinates!

 

[Snowysangel]

not all sides! all cordinates!

Oh like x1 y1 x2 y2 formula! Could u answer my relative velocity question btw... Why can't we multiply the direction vector by the speed to find the velocity vector...why do we need the unit vector to do that?