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tiny-mole [99]
3 years ago
11

Use the permutation formula: A church has 10 bells in its bell tower. Before each church service 4 bells are rung in sequence. N

o bell is rung more than once. How many sequences are there?
A
302,400
B
151,200
C
210
D
5040
Mathematics
1 answer:
alekssr [168]3 years ago
4 0
Nsiwmalq wk wow a wow. Aka wow aka a snake a
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3 0
3 years ago
The mean length of 7 planks of wood is 1.35m. When an extra plank of wood is added, the mean length of a plank of wood increase
azamat

Answer: Hello There!................

Mean = Sum of observation / total number of observation

Mean = 1.35m

1.35  = Sum of length of 7 wood planks/ 7

1.35*7 = Sum of the length of 7 wood planks

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Let the length of extra added wood plank = x

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The length of extra added wood plank = 1.75m

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Mark me brainest please. Hope this helps. Anna ♥

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