Mathematics, 22.03.2021 16:40 rosy2019
In a large section of a statistics class, the points for the final exam are normally distributed, with a mean of 76 and a standard
deviation of 7. Grades are assigned such that the top 10% receive A's, the next 20% received B's, the middle 40% receive Cs, the
next 20% receive D's, and the bottom 10% receive Fs. Find the lowest score on the final exam that would qualify a student for an A.
a B, a C, and a D
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Answers: 2
Mathematics, 21.06.2019 17:30
Which expressions are equivalent to k/2 choose 2 answers: a k-2 b 2/k c 1/2k d k/2 e k+k
Answers: 2
Mathematics, 22.06.2019 03:00
The perimeter of ? cde is 55 cm. a rhombus dmfn is inscribed in this triangle so that vertices m, f, and n lie on the sides cd , ce , and de respectively. find cd and de if cf=8 cm and ef=12 cm. the answer is not cd=20 and de=15. i have tried that one, it does not work.
Answers: 3
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