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Nostrana [21]
3 years ago
15

Can u guys help me plzzzzzzzzzzzzzz

Mathematics
2 answers:
Ksivusya [100]3 years ago
4 0

Answer:

31

Step-by-step explanation:

basically the easiest way to do that is to remember that a flat line is equal to 180 degrees, it gave you 149, so all you gotta do is 180-149

horrorfan [7]3 years ago
4 0

Answer:

31

Step-by-step explanation

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in a AP the first term is 8,nth term is 33 and sum to first n terms is 123.Find n and common difference​
allsm [11]

I believe there is no such AP...

Recursively, this sequence is supposed to be given by

\begin{cases}a_1=8\\a_k=a_{k-1}+d&\text{for }k>1\end{cases}

so that

a_k=a_{k-1}+d=a_{k-2}+2d=\cdots=a_1+(k-1)d

a_n=a_1+(n-1)d

33=8+(n-1)d

21=(n-1)d

n has to be an integer, which means there are 4 possible cases.

Case 1: n-1=1 and d=21. But

\displaystyle\sum_{k=1}^2(8+21(k-1))=37\neq123

Case 2: n-1=21 and d=1. But

\displaystyle\sum_{k=1}^{22}(8+1(k-1))=407\neq123

Case 3: n-1=3 and d=7. But

\displaystyle\sum_{k=1}^4(8+7(k-1))=74\neq123

Case 4: n-1=7 and d=3. But

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8 0
3 years ago
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