Friday, June 02, 2006

answers

Q1) mode = 1&2
mean = 2.5
median = 2

Q2) £26,000

Q3) a) 45 b) 1200 c) 8.4 d) 3400

Q4) 4

Q5) 32cm

Q6) a) 72 b) 81 c) 152 d) 12

Q7) c= 30+ 0.1t or c= 3000 +10t

Q8) a) y=2 b) s=18 c) d=6

Q9) £180 and £60

Q10) a) 12 b) 16 c) 1760

Q11)
A = (2,1)
B = (3,4)
C = (-2,3)
D = (-4,2)
E = (-3,-1)
F = (-2,-3)
G = (1,-3)
H = (3,-1)
J = (-1,0)
K = (0,2)

Q12) a) 23% b) 44.2% c) 13% d) 15%

Q13)
0 789
1 022223399
2 233337
3 224
4 3358
5 09

key 32 = 32

Q14)
H1 H2 H3 H4 H5 H6
T1 T2 T3 T4 T5 T6
a) 1/12 b) 1/4 c) 1/4

Q15)a) x = 5 b) y= 2

Q16)
angles should be 79, 45, 236

Q17)a) j= 37 k = 71
b) y=23 z = 23
c) a=127 b=53 c=53
d) c= 106 b = 106 a = 74 d = 65 e =65

Q18) a) 8/14 b) 37/56 c) 4/21 d) 2/9

Q19)a) positive correlation b) negative corr. c) no corr.

Q20) a) 256 b) 343

Q21) Area= 78.5 sq cm Circ= 31.4

Q22) a) 7n -5 b) 2n +9 c) 6n-1

Q23) 0.42

Q24) a) 9x+12 b) 3x + xy c) ar + ae d) x^2 +7x + 12

Q25) 1.12

Q26) a) 4cm
b) 29cm

2 Comments:

At July 04, 2006 6:21 pm, Anonymous Anonymous said...

on the revision sheet you gave us, how do u work out number 24d- Expand (x+3) (x+4) because my answer was 2x +7. plz help!!!! RAKHEE

 
At July 04, 2006 8:20 pm, Blogger Mr Allan said...

It's a "quadratic" Rakhee

look at it like this

(x+3)(x+4) = x(x+4) + 3(x+4)
= x^2 + 4x + 3x + 12
= x^2 + 7x + 12

This powerpoint might help you if you're still stuck

 

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