BNU1501 EXAM PACK

BNU1501
EXAM PACK




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,SOLUTIONS FOR BNU 1501 EXAMINATION QUESTION PAPER
OCT/NOV 2016


1. 3(𝑦 + 2) = 4(2 − 𝑦)

3𝑦 + 6 = 8 − 4𝑦

3𝑦 + 4𝑦 = 8 − 6

7𝑦 = 2

2
𝑦= Option [3]
7




2. 2(𝑥 − 1) − 3(𝑥 + 1) = 12𝑥 + 21

2𝑥 − 2 − 3𝑥 − 3 = 12𝑥 + 21

12𝑥 + 3𝑥 − 2𝑥 = −21 − 3 − 2

13𝑥 = −26

𝑥 = −2 Option [2]



3. √16𝑥16 = 4𝑥8 Option [4]



4. 2𝑥2 − (𝑥 − 3) − 2𝑥(1 + 𝑥)

= 2𝑥2 − 𝑥 + 3 − 2𝑥 − 2𝑥2

= −3𝑥 + 3 Option [1]

, 7 3 14
5. X ÷
24 16 32

7 3 32
= X X
24 16 14

1
= Option [4]
8



3 5
6. 6 + −
11 2 3

12 33 5
= + −
22 22 3

45 5
= −
22 3

135 110
= −
66 66

25
= Option [2]
66




9 3
7. 5 − ÷
9 8 4

5 9 4
− X
9 8 3

5 3
−
9 2

10 27
−
18 18

17
− Option [3]
18

, 8. 9𝑥𝑦 = 3 X 3 X 𝑥 X 𝑦

8𝑥2 = 2 X 2 X 2 X 𝑥 X 𝑥 X

6𝑥𝑦3 = 2 X 3 X 𝑥 X 𝑦 X 𝑦 X 𝑦

𝐿𝐶𝑀 = 2 X 2 X 2 X 3 X 3 X 𝑥 X 𝑥 X 𝑦 X 𝑦 X 𝑦

𝐿𝐶𝑀 = 72𝑥2𝑦3 Option [2]



9. 5𝑥 − 3 Option [3]



10. (𝑎𝑏2)(𝑎2𝑏)3 = (𝑎𝑏2)(𝑎6𝑏3)

= 𝑎7𝑏5 Option [3]



11. 𝐶i𝑟𝑐𝑢𝑚f𝑒𝑟𝑒𝑛𝑐𝑒 𝑜f 𝑡ℎ𝑒 j𝑎𝑐𝑢𝑧𝑧i = 𝜋𝑑

=𝜋X3

= 9,4 𝑚 Option [1]


1
12. 𝑃𝑎𝑣𝑒𝑑 𝑎𝑟𝑒𝑎 = [( 12 X 8)] − [( X 3 X 3 X 4) + (𝜋 X 1,52)]
2


96 − 18 − 2,25𝜋

= 78 − (2,25𝜋)

= 70,9 𝑚2 Option [4]