Maths, Addmaths and Statistics: Post your doubts here!

[simranlalchand]

Which Part?

the whole question

 

[simranlalchand]

Dont spam. Once is enough.

sorry it was giving an error

 

[farhan141]

the whole question

Ok wait let me solve it then I'll tell you.

sorry it was giving an error

No Problem

 

[Mohammad Farzanullah]

plz expalain Q4 part (b)!
http://papers.xtremepapers.com/CIE/...(Calculator Version) (4024)/4024_s05_qp_2.pdf

 

[farhan141]

the whole question

I believe Marking Scheme is wrong here or maybe I am wrong. Sorry.

 

[farhan141]

It followed the path like an arc of a circle and rotated 125 degrees to the left

plz expalain Q4 part (b)!
http://papers.xtremepapers.com/CIE/...(Calculator Version) (4024)/4024_s05_qp_2.pdf

 

[simranlalchand]

I believe Marking Scheme is wrong here or maybe I am wrong. Sorry.

what is your answer coming?
marking scheme can be wrong?

 

[farhan141]

what is your answer coming?
marking scheme can be wrong?

I get 5.71 for part a but marking scheme says 15.7. It can be wrong sometimes but not always.

 

[simranlalchand]

i got the answer 15.71 but i am not able to find the perimeter of region b

 

[TheStallion-Reborn]

any damn way of DEDUCING transformatin matrices?

 

[farhan141]

i got the answer 15.71 but i am not able to find the perimeter of region b

How did u get it?

any damn way of DEDUCING transformatin matrices?

Use graph sketches to remember them.

 

[TheStallion-Reborn]

How did u get it?


Use graph sketches to remember them.

can u please xplain how?

 

[simranlalchand]

How did u get it?


Use graph sketches to remember them.

we use the formula 2pi r withe radius 5 so answer will come 31.42 and the we divide 31.42by 2 and we get 15.71 because it is a semicircle

 

[flesh-eater]

http://papers.xtremepapers.com/CIE/...Calculator Version) (4024)/4024_w10_qp_22.pdf

Can anyone explain me Q3(b)?

 

[sourov97]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Mathematics D (Calculator Version) (4024)/4024_w12_qp_21.pdf
Q5
can anyone explain this question

a) perimeter = the 2 arcs (each = half arc of a semi circle)....half arc of a semi circle = (pie*5)/2 = 7.85 cm....hence the perimeter = 2*7.85 = 15.71cm
b) perimeter of B = perimeter of A (same 2 half semi circle arcs) + one side of the square (10cm) = 15.71+ 10 = 25.71cm
c) 4 lines of symmetry and 4 order of rotation (same as square)
wait...i need some time to figure out (d)..

 

[Saad Mughal]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Mathematics D (Calculator Version) (4024)/4024_w10_qp_22.pdf

Can anyone explain me Q3(b)?

EAH = BAH = x
AED = ABC = 80
EDH = BCH = 4x
Angle sum of Pentagon = 3 * 180 = 540.
Therefore,
x + x + 4x + 4x + 80 + 80 = 540
10x + 160 = 540
10x = 380
x = 38

 

[flesh-eater]

I was calculating the angle of one side instead of the sum! -.-
Anyways, thank you!

 

[KWIKIW]

Who got above 72 for p1.

 

[sourov97]

Who got above 72 for p1.

not sure!...but i could find out only one mistake in P1...so expecting lowest 75

 

[KWIKIW]

What went wrong?