Paper 42 (13th May) - Full Solutions

[notnek01]

r u sure the last Q is 20 one of my teachers said its 19

Your teacher made a mistake.

 

[monil dawda]

I got the lower and upper bound, but i calculated area instead of perimeter...how many marks am i losing out of 3 ?

 

[notnek01]

I got the lower and upper bound, but i calculated area instead of perimeter...how many marks am i losing out of 3 ?

If you used correct values in your working, you'll probably get 1 mark.

 

[inquisitiveness]

for the tank question,I did the formula of cylinder = volume of cylinder + 5
with all working shown.....how many marks would i get?

You'll lose 1 mark for 19 and I'd need to see all your working to know how many you would get for the percentage question.

 

[himanshu dave]

sir if by mistake for the major arc AC I found out the minor arc AC then how much would I get out of the three marks. my minor arc is perfectly correct with the working

 

[notnek01]

for the tank question,I did the formula of cylinder = volume of cylinder + 5
with all working shown.....how many marks would i get?

Which question? And I don't understand your working.

 

[notnek01]

sir if by mistake for the major arc AC I found out the minor arc AC then how much would I get out of the three marks. my minor arc is perfectly correct with the working

1 mark probably.

 

[Micro961]

For the last question I used another angle but exactly same steps,
I did 360/my angle = 12 exactly
then i did n - 1 = 12 then
n = 13,
Will i lose all the 3 marks?

 

[himanshu dave]

Sir for 4e where we had to prove if the triangles are congruent I wrote
"they are congruent by the rule SAS(side-angle-side) AT=CT and ANGLE TBC=TBA" how many marks will I get from the total 3

 

[notnek01]

For the last question I used another angle but exactly same steps,
I did 360/my angle = 12 exactly
then i did n - 1 = 12 then
n = 13,
Will i lose all the 3 marks?

You'll get 2 / 3 I think.

 

[SamThomas]

My total is 192/200. A* ?

 

[notnek01]

Sir for 4e where we had to prove if the triangles are congruent I wrote
"they are congruent by the rule SAS(side-angle-side) AT=CT and ANGLE TBC=TBA" how many marks will I get from the total 3

You haven't explained why for the side and the angle. You may get 1 mark for the congruence method.

 

[monil dawda]

Percentage 154...got 254 but forgot to subtract 100
How many marks lost out of 3 ?

 

[himanshu dave]

Q8c) I wrote 3/8 *5/6 * 3/10 I got it to be 3/32 how many marks will I get from the total 3

 

[inquisitiveness]

You haven't explained why for the side and the angle. You may get 1 mark for the congruence method.

i did not write the lines are extended from tangents i just wrote about which ever sides that were equal(included all sides)and about the angles...will i get 3 marks

 

[notnek01]

Percentage 154...got 254 but forgot to subtract 100
How many marks lost out of 3 ?

284? Maybe 2 marks but I'd need to see your working.

 

[himanshu dave]

Q8c) I wrote 3/8 *5/6 * 3/10 I got it to be 3/32 how many marks will I get from the total 3

 

[notnek01]

Q8c) I wrote 3/8 *5/6 * 3/10 I got it to be 3/32 how many marks will I get from the total 3

No marks I think.

 

[Igcse giver]

for the matrix not possible one what if i wrote 0 or nil

 

[notnek01]

for the matrix not possible one what if i wrote 0 or nil

No mark.