1
2
3
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5
6
7
42x + 14y = 25.2
81x = 480.2
X = 5.93
Put x = 5.93
In 3x + y = 1.8 y = - 15.99
8
9
Answer
10
5
11
Answer
12
5
13
Answer
14
5
15
Answer
16
5
17
Answer
18
5
19
Answer
e . x = 3, y = - 2
20
5
21
Answer
22
5
6x = -2y
23
Answer
6x = -2y
24
5
25
Answer
26
5
27
Answer
28
29
Answer
30
31
Answer
32
C. A pair of numbers has a sums of 52 and a difference of 11. Find the numbers.
33
C. A pair of numbers has a sums of 52 and a difference of 11. Find the numbers.
Answer
34
d. The combined ages of two people is 34. If one person is 6 years younger than the other, find their ages.
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d. The combined ages of two people is 34. If one person is 6 years younger than the other, find their ages.
Answer
36
7. A computer store sold 4 hard drives and 10 pen drives for $200. And 6 hard drives and 14 pen drives for $290. Find the cost of a hard drive and the cost of a pen drives .
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7. A computer store sold 4 hard drives and 10 pen drives for $200. And 6 hard drives and 14 pen drives for $290. Find the cost of a hard drive and the cost of a pen drives .
Answer
38
8. A large sports stadium has 21000 seats. The seats are organised into blocks of either 400 or 450 seats . there are three times as many blocks of 450 seats as there are blocks of 400 seats. How many blocks are there ?
39
8. A large sports stadium has 21000 seats. The seats are organised into blocks of either 400 or 450 seats . there are three times as many blocks of 450 seats as there are blocks of 400 seats. How many blocks are there ?
Answer
40
41
a + c = 6.7 4.2 + c = 6.7
a - c = 1.7 c = 2.5
2a = 8.4
a = 4.2
4.20
2.50