IGCSE MATHS Doubts

[Ghost Of Highbury]

5) 3x -2 = 8*5

    3x -2 = 40

    3x = 42

     x= 14

6) a)120 - 72 = 48/0.5 = 96km/h

    b) 0 km/h as only time is increasing not distance.

@hesham - post the link plz

[Adzel]

Thanks....and I'll be waiting for the rest please.

[-Cornea]

i) square both sides it will be:
32=2^2n
2^5=2^2n
power are equal then
5=2n
n=5/2

ii)cube root of (1/8)=1/2
1/2=2^q
2^-1=2^q
consequently..q=-1

[-Cornea]

adzel
draw the paralleogram and consequently u will get the third side
A=(1,1) B=(4,6) C=(8,6) then u will get that D=(5,1)
use the rule =
square root of any 2 points let's take (4,6) and (1,1)
square root of (4-1)^2+(6-1)^2
square root of (3)^2+(5)^2
square root of 9+25
square root of 34
Answer=5.83
(Tht's the third question)

[-Cornea]

i mean point d not the third side:D Parallelogram*

[Hesham Mhd]

cant find the link sry, can yu read it plz?

[-Cornea]

hesham i guess i did write the answer if iam not wrong

[Ghost Of Highbury]

Thanks pink princess to answer the rest. im a lil busy watching the EPL final round. sorry guyz, will Be right back soon.

[Vin]

Whoa a lot has happened here ..

[Vin]

cant find the link sry, can yu read it plz?

You can find every paper on earth on www.freeexampapers.com .. !! 

[Hesham Mhd]

oh lol, didnt c it , Thank You Thank You 

[-Cornea]

welcome welcome

[Adzel]

Thanks Princess...

[Malak]

05 Nov P2 http://www.freeexampapers.us/IGCSE/Maths/CIE/2005%20Nov/0580_w05_qp_2.pdf

Q7 b
Q11 - Can anyone explain how to get the answer 
q18 b

Thx

[-Cornea]

listen when u do f(x) u remove the X and replace it by the number given
now it's f^-1(x) so replace the y by 1 instead of replacing x because it's inverse
so it will be:
1=10^x
Anything to the power of zero =1
so x =0

listen u just need to find the perimeter of the shape
4*4 i.e(4+4+4+4) +2*pie*1.2 i.e(4*0.25*2*pie*1.2)
i guess the answer will be 23.5 approximatly it's 24 ppl (or if u want to add this half person )