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FrozenT [24]
3 years ago
13

Find a formula in n, a, m, and d for the sum (a md) (a (m 1)d) (a (m 2)d) · · · (a (m n)d), where m and n are integers, n ≥ 0, a

nd a and d are real numbers. justify your answer.
Mathematics
1 answer:
Anettt [7]3 years ago
3 0
Write this as the sum of:
a+md
a+md+d
a+md+d+d
...
a+md+d+d+...+d

Total=n(a+md)+d(1+2+3+...+n-1)=n(a+md)+dn(n-1)/2
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If B is in the interior of ∠DEF, m∠DEB = 27.2, and m∠DEF = 92.5, find m∠BEF. (Lesson 2-7)
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Step-by-step explanation:

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m∠DEB = 27.2,

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