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Arada [10]
2 years ago
5

Marshall evaluates the expression 15.3 - 7.9 and gets an answer of 7.4.

Mathematics
1 answer:
d1i1m1o1n [39]2 years ago
8 0

Answer:

C

Step-by-step explanation:

Anything less than 5 rounds down while 5 and anything more rounds up. Therefore...

15.3 rounds to 15

7.9 rounds to 8

7.4 rounds to 7

So, his answer is reasonable.

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Of the 8 students in the chess club, three will represent the club at an upcoming competition. How many different 3-person teams
xz_007 [3.2K]
I think that this is a combination problem. From the given, the 8 students are taken 3 at a time. This can be solved through using the formula of combination which is C(n,r) = n!/(n-r)!r!. In this case, n is 8 while r is 3. Hence, upon substitution of the values, we have

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6 0
3 years ago
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Answer:

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7 0
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