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motikmotik
3 years ago
11

Which one is it? please help me

Mathematics
1 answer:
zubka84 [21]3 years ago
3 0

Answer: Its the second one!

Step-by-step explanation

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3 years ago
Determine the sum of the arithmetic series: 5+18 +31 +44 + ... 161.
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Hello,

18-5 = 13

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So we need to compute

\displaystyle \sum_{k=0}^{k=12} \ {(5+13k)}\\\\=\sum_{k=0}^{k=12} \ {(5)} + 13\sum_{k=1}^{k=12} \ {(k)}\\\\=13*5+13*\dfrac{12*13}{2}\\\\=65+13*13*6\\\\=65+1014\\\\=1079

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4 years ago
Whats the área of a square whose perimeter is 48
Roman55 [17]

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7 0
3 years ago
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The obfuscating factor in this question is the renaming of angle SZW to angle WZS. Both names refer to the same angle.

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