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lesantik [10]
3 years ago
8

One of your friends lives 225 km away. It took him 2.5 hours to travel to the cottage. At what speed did he travel?

Mathematics
1 answer:
Dahasolnce [82]3 years ago
8 0
Speed = distance / time

given:
distance = 225 km and time = 2.5 hours

so
speed = 225 / 2.5 = 90 km per hour

Answer:
Speed = 90 km per hour
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In order to find the number of different tests required for every possible pairing of five wires, we need to find the combination rather than their permutation as order of wires doesn't disturb the testing.

So, finding the combination of 5 pairs of wires from a total of 8 wires is given as:

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Plug in the given values and solve. This gives,

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