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maths p2

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astarmathsandphysics:

--- Quote from: hyebyekadal on May 12, 2009, 07:40:56 am ---hey guys can anyone help me out with the significant firgures part? or any website? in my textbook its not very clear.
and in all these tests I always mess up on the sf part. and also is ) a signifcant number? also something like 2045 to 2 sf is what? im really confused also theres something about " after the decimal place zero is  significant figure or something...so any help?
thanks in advance

--- End quote ---
2045 to 1 sf is 2000
to 2 sf is 2000
to 3 sf is 2050
to 4 sf is 2045

astarmathsandphysics:
31.235
to 1 sf is 30
to 2 sf is 31
to 3 sf is 31.2
tp 4 sf31.24
to 5 sf is 31.235


31.04

to 1 sf is 30
to 2 sf is 31
to 3 sf is 31.0
to 4 sf is 31.04

theigstudent:
could some one help me with may 05 pap 2
Q 15 b
 
nov 03 pap 2
Q 8 b
Q12 b

unknown:
hey need loads of help
hm i require help on d topics net ,lines of symettry n rotational 2
also al info abt basic quadrilaterals
n d list of prime no's plzz help
requirement is urgent

astarmathsandphysics:

--- Quote from: theigstudent on May 12, 2009, 08:26:06 am ---could some one help me with may 05 pap 2
Q 15 b
 
nov 03 pap 2
Q 8 b
Q12 b



--- End quote ---

may 05

gradient=(5-2)/(8-6)=1.5 so y-y1=1.5(x-x1) so y-5=1.5(x-8) so y=1.5x-7

nov 03
8b)5k
12b)x=45 and 225

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