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wariber [46]
3 years ago
8

These I need help on

Mathematics
1 answer:
Luba_88 [7]3 years ago
8 0

Answer:

I did the first page you asked for just now! :)

Step-by-step explanation:

20)  15 = 3r    R = 5

21)   k/2 = 6    K = 12

22)  3h = 27   H = 9

23)   j/3 = 4     J = 12

24)  6p = 30   P = 5

25)  n/10 = 40   N = 400

26)  h/4 = 15   H = 60

27)  9/s = 81   S = 9

28)  14 = 2c   C = 7

29)  26 = 13d   D = 2

30)  6 = m/3   M = 18

31)  7 = p/5   P= 35

32)  4w = 16   W = 4

33)  f/3 = 9   F = 27

34)  20 = 4x   X = 5

35)  3z = 36   Z = 12

36)  10 = j/6   J = 60

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Step-by-step explanation:

Distance between two villages = d

(a) \:  \frac{4}{5}  \: of \: d =  \frac{4}{5} d \\  \\ (b) \:  \frac{3}{4}  \: of \: d =  \frac{3}{4} d  \\  \\ (c) \: \frac{4}{5} d -   \frac{3}{4} d = 1.5 \\  \\  \therefore \:   \bigg(\frac{4}{5} -   \frac{3}{4} \bigg) d = 1.5 \\  \\ \therefore \:   \bigg(\frac{4 \times 4 - 3 \times 5}{5 \times 4} \bigg) d = 1.5 \\  \\ \therefore \:   \bigg(\frac{16- 15}{20} \bigg) d = 1.5 \\  \\ \therefore \:   \bigg(\frac{1}{20} \bigg) d = 1.5 \\  \\ \therefore \: d = 1.5 \times 20 \\  \\ \:  \:  \:  \:  \:  \huge \orange{ \boxed{{ \therefore \: d = 30}}}

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3 years ago
Please, Answer is needed.
Yuki888 [10]

Answer:

540 mins | 9 hours | 540, 9

420 mins | 7 hours | 420, 7

300 mins | 5 hours | 300, 5

180 mins | 3 hours | 180, 3

Step-by-step explanation:

1 hour = 60 mins

To convert hours into minutes, multiply the number of hours by 60 minutes:

9 hours × 60 mins = 540 mins

7 hours × 60 mins = 420 mins

5 hours × 60 mins = 300 mins

3 hours × 60 mins = 180 mins

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