Maths, Addmaths and Statistics: Post your doubts here!

[muhammadali233]

Good morning people - apologies for everything that transpired tommorow.
I was just infected by the gifsease.

I am happy to announce that now. I. am.
.
.
.
.
.
.
.
.
.
.
still a part - get ready for more today.

I also got infected

 

[muhammadali233]

Good morning people - apologies for everything that transpired tommorow.
I was just infected by the gifsease.

I am happy to announce that now. I. am.
.
.
.
.
.
.
.
.
.
.
still a part - get ready for more today.

I also got infected
View attachment 44014

 

[princess Anu]

b

odc = 90 - 58 = 32
doc = 180 - 32-32 = 116
aoc = 86 * 2 = 172 ( angle at centre = 2 angle AT circumference )
doc = 172 - 116 = 56

bcd = 58 ( alternate angles )
bad = 180 - 58 = 122 ( opposite angles in a cyclic quad )

but how is aoc equal to 2(86)?
how can this( angle at centre property ) be applied here :s

 

[princess Anu]

part a?

 

[exploded diper]

b

but how is aoc equal to 2(86)?
how can this( angle at centre property ) be applied here :s

they are suspended by the same arc ac

 

[exploded diper]

length = x
width + x = 10
width = 10 - x
and since the side is a suare so height = width = 10 - x
volume = length * width * height
so y = x ( x - 10 ) ( x-10 )
y = x (x^2 - 20x + 100)
y = x^3 - 20x^2 + 100x

 

[exploded diper]

XPC Bot
Sponsored Listings

 

[FLRNAB]

XPC Bot
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Almost understood it.

 

[princess Anu]

how to make the highlighted equation ?

 

[exploded diper]

Almost understood it.

 

[era30amy]

What if I skip Transformation for Paper 2? :/ There's choice.
Please, tell me. ._.

 

[exploded diper]

What if I skip Transformation for Paper 2? :/ There's choice.
Please, tell me. ._.

no dont......what if it comes in section A

 

[***amd***]

What if I skip Transformation for Paper 2? :/ There's choice.
Please, tell me. ._.

skipping anything in maths means death :3

 

[exploded diper]

skipping anything in maths means death :3

 

[Awesome12]

http://papers.xtremepapers.com/CIE/...Calculator Version) (4024)/4024_s13_qp_22.pdf
Question 4 (a)
The working given in the marking scheme is

(AF + 16) * 6 = 138

I mean even if this is a trapezium, don't we have to multiply it by 2 as there are 2 trapeziums?
***amd***

 

[exploded diper]

how much time do you guys spend on section A and on sectoin B asadalam

 

[era30amy]

no dont......what if it comes in section A

:"/
Teach me Transformation.

 

[exploded diper]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Mathematics D (Calculator Version) (4024)/4024_s13_qp_22.pdf
Question 4 (a)
The working given in the marking scheme is

(AF + 16) * 6 = 138

I mean even if this is a trapezium, don't we have to multiply it by 2 as there are 2 trapeziums?
***amd***

this question came in our mock exams ....
so the area of the trapezium = 1/2 *height * (sum of parallel sides )
so we multiply it by 2 and then get ... 6 * (af + 16 )

 

[Awesome12]

this question came in our mock exams ....
so the area of the trapezium = 1/2 *height * (sum of parallel sides )
so we multiply it by 2 and then get ... 6 * (af + 16 )

Ughh yeah
Thanks

 

[***amd***]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Mathematics D (Calculator Version) (4024)/4024_s13_qp_22.pdf
Question 4 (a)
The working given in the marking scheme is

(AF + 16) * 6 = 138

I mean even if this is a trapezium, don't we have to multiply it by 2 as there are 2 trapeziums?
***amd***

there are two trapeziums making an area if 138.
area of 1 trapezium = 0.5 (AF + 16) * 6
area of whole fig. = 138 = 2 * 0.5 (AF + 16) * 6
[2 * 0.5 = 1)
so..
(AF + 16) * 6 = 138