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17 questions
x = 128, y = 284
x = 128, y = 76
x = 64, y = 52
x = 52, y = 284
70
21
56
35
4 packs of envelopes and 10 packs of stamps
60 packs of envelopes and 60 packs of stamps
2 packs of envelopes and 5 packs of stamps
90 packs of envelopes and 90 packs of stamps
(x+2)(x+6)
(x-2)(x-6)
(x+2)(x-6)
(x-2)(x+6)
30x7y8
30x10y7
11x7y8
11x10y7
75 cm2
40 cm2
50 cm2
60 cm2
190
404
120
235
90 %
9 %
0.9 %
0.09 %
x = 63
x = 7
x = 9
x = 45
2
20
200
19
£ 268
£ 286
£ 266
£ 260
r = p - 3
r = p + 3
r = 3 - p
r = 3p
( -3, 6 )
( -3, -12 )
( -3, -6 )
( -3, -9 )
32 m
10 m
30 m
40 m
100 ml
50 ml
225 ml
350 ml
1992
1993
1994
1995
150
300
600
900
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