### 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:

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

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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