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Intensive Revision Worksheets/Resources For Math

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Numb:
Dear all,
I am in desperate need of INTENSIVE REVISION WORKSHEETS FOR IGCSE MATH
on these topics
-Tranformations
-Vectors
-Cos Rule
-Similarity
-Cumulative frequency graphs and Histograms

THIS IS URGENT. please help if you can.

Saladin:
Your book should be suffice, other than that i will try to post topic based papers.

Numb:
thank you so much

Extended Math For IGCSE (THE BLUE BOOK )
pg 227

question 9

i need majoir help on that.
and

pg. 205
question 7 b

and question 9 c

ALSO.
Congruency doesn't seem to be in the syllabus but it has come in past papers.
should i study it?

Saladin:
In the process of answering.

For 9(a)



Simply make x the subject of the forumula.

You get a hint of why , because in (a), there is no

(b)



What you have to do in this case is that you have to back solve the equation. And then see what you did to get to the original equation.

(c)



(d)





Thus to get to -7, has to equal to .

Numb:
i still didn't get it

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