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Sedaia [141]
3 years ago
13

Sam needs an average of 65 on his two science test. He scored 60 on his first test what is the minimum he can score on his secon

d test.
Mathematics
1 answer:
fenix001 [56]3 years ago
7 0

70

to find the answer do 60+x  / 2  =65

Solver for x

multiply 2 on both sides to get 130

60+x=130

x=70

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Calculate the number of ways to form a set of three distinct items such that no two of the selected items are in the same row or
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Answer:

1200

Explanation:

Order does not matter, if we said xyz order, it would still not make a difference if it was zyx or yzx hence we use the combination formula:

nCr = n! / r! * (n - r)!

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