Qualification > Sciences
Maths & Physics Help
SGVaibhav:
need help
this paper
may june 05 paper 4 igcse
http://www.freeexampapers.com/FreeExamPapers.com_.php?__lo=SUdDU0UvTWF0aHMvQ0lFLzIwMDUgSnVuLzA1ODBfczA1X3FwXzQucGRm
Questions
7)a)i (plz try it out) answer is 46.5
8)a) (2 answers====>1 and 3 {HOW?})
plz
sweetsh:
ok 7) a) 50/100 *150 =75
you go to 75 on the cumulative column and you draw a line to see how much is the speed.
8)a) f(x) = x2 – 4x + 3
y=x2 -4x + 3
y= (x-3) (x-1)
x=3 or x=1
SGVaibhav:
ok
i got same thing for 7a)
but when i did that thing on graph, my answer is completely different.
try it out in ur pc only without printing
that is :@
it is (46.5 in markscheme) how the f***?
in 8a
i understood
but i had one quesiton
when do the thing we did below and when do we actually substitute?
i am little confused with that.
sweetsh:
I did it both on pc and on mypaper it was 46.5..make sure you got the point (75) as the scale for the y axis is that 2units for each line so 75 will be between 74 and 76...in addition to the scale on x axis where each line is 0.5 so when you put the line its 46.5
astarmathsandphysics:
Thanks Sweetsh. I was teaching maths for a few hours.
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