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storchak [24]
3 years ago
8

9. 1/2 (16 + 4 + 4) + (6 X 4 = 8) I do not no how to do this

Mathematics
2 answers:
kap26 [50]3 years ago
5 0
I think it might be 456
lilavasa [31]3 years ago
5 0
1/2(24)+(16) ( i assume that the equal sign was meant to be subtraction. )

12+16= 28. that’s a guess but only works if the equal sign was meant to be a subtraction symbol
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At a competition with 7 runners, medals are awarded for first, second, and
il63 [147K]

Answer:

Option A - Permutation; number of ways = 210

Step-by-step explanation:

Given : At a competition with 7 runners, medals are awarded for first, second, and  third places. Each of the 3 medals is different.

To find : How many ways are there to  award the medals?        

Solution :

There are 7 runners but medals are three.

The first runner up got first medal as one is locked.

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So, There is a permutation.

Number of ways to award the medals is ^7P_3

We know, ^nP_r=\frac{n!}{(n-r)!}

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