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eimsori [14]
2 years ago
6

There are 12 participants running in a 110m hurdles race. How many ways are there to award a gold, silver, and bronze medal?

Mathematics
1 answer:
prohojiy [21]2 years ago
8 0

Answer:

220 ways

Step-by-step explanation:

The order matters because there's going to be a first, second, and third place.

So, 12P3=12!/(12-3)!*3!=12!/9!*3!=12*11*10*9!/9!*3!=12*11*10/6=220

Therefore, 220 ways

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What number needs to be subtracted from both sides of the equation 40 = 25 + x in order to isolate the variable and solve for x?
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Answer:

x = 15

Step-by-step explanation:

As given, the equation 40 = 25 + x

As on the R.H.S of the equation, there is one constant and a variable x

As to isolate the variable we have to subtract the same constant so that that constant gives 0.

As we have the constant value 25

So, subtract 25 from both side of the equation, we get

40 - 25 = 25 + x - 25

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∴ we get

x = 15

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Reason
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pochemuha

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