Maths D 22

[Saad Mughal]

it couldnt have been exact since the value of 7.83 was rounded!

Yeah but I didn't take 7.83, I took the whole value from the calculator, I always do this.

 

[danial 234]

while i wrote that " the centre of enlargement is B(0,0).

 

[Saad Mughal]

while i wrote that " the centre of enlargement is B(0,0).

You'll get the mark. Don't worry.

 

[job wilson]

For Simone,you did-
8000*3.5*2
-------------
100

Right?

who had more .....simone or the other one?????????????

 

[Heyyy]

who had more .....simone or the other one?????????????

It was Lyndia for me by 1.52 but if you used Compound interest for Simone then it was Simone by $8

 

[job wilson]

yeah i did wrote simone by 8.......will i get marks for this???

 

[Nad321]

hey, in calculating accurately the length AC in sec B Q8, we had to apply Pythagoras theorem; as it told C is due west of B and the lengths AC (1800 M), AND AB (1500 m) were given??? My friends told me we had to do this,whereas,I, measured and multiplied my length with the scale given. =\

 

[Aly Emran]

hey, in calculating accurately the length AC in sec B Q8, we had to apply Pythagoras theorem; as it told C is due west of B and the lengths AC (1800 M), AND AB (1500 m) were given??? My friends told me we had to do this,whereas,I, measured and multiplied my length with the scale given. =\

we had to measure and multiply cox it was drawn to the scale of 1:150 and ur method isnt wrong i guess the answer still would be same

 

[Heyyy]

hey, in calculating accurately the length AC in sec B Q8, we had to apply Pythagoras theorem; as it told C is due west of B and the lengths AC (1800 M), AND AB (1500 m) were given??? My friends told me we had to do this,whereas,I, measured and multiplied my length with the scale given. =\

We had to measure by scale and multiply it by 150.
We could have confirmed our answer using Pythagoras but the correct way was to measure and multiply by 150

 

[Heyyy]

yeah i did wrote simone by 8.......will i get marks for this???

I have no Idea but I guess they'll credit you with half the marks.

 

[Saad Mughal]

We had to measure by scale and multiply it by 150.
We could have confirmed our answer using Pythagoras but the correct way was to measure and multiply by 150

Actually no. We had to use Pythagoras. They said CALCULATE the length which means (according to the key words page) that answers by accurate drawing will not be accepted.

 

[Heyyy]

no i guess they might give full cox the answer is correct even if method is different like we do 1/2ab for area of triangle if we do it with hero's law underootp(p-a)(p-b)(p-c) the answer would be same

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

 

[Heyyy]

Actually no. We had to use Pythagoras. They said CALCULATE the length which means (according to the key words page) that answers by accurate drawing will not be accepted.

I did both,confirmed my answer using pythagoras but there was a similar question,don't remember in which year,and answers by both methods were accepted and credited full marks

 

[Saad Mughal]

I did both,confirmed my answer using pythagoras but there was a similar question,don't remember in which year,and answers by both methods were accepted and credited full marks

Didn't know so I didn't take the risk. What answer were you getting?

 

[Heyyy]

Didn't know so I didn't take the risk. What answer were you getting?

960 using Pythagoras and 975 using the scale

 

[Heyyy]

so i lost marks in both of them?

No.
They aren't that strict

 

[Saad Mughal]

960 using Pythagoras and 975 using the scale

How 960 using Pythagoras?

 

[Heyyy]

How 960 using Pythagoras?

It was either 960 or 990,can't remember correctly

 

[Saad Mughal]

It was either 960 or 990,can't remember correctly

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

 

[Heyyy]

atleast if they do strict marking will i lose marks

No.I don't think so