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lys-0071 [83]
3 years ago
7

Find: sin B B 15 A 12 *The figure is not drawn to scale what is sin b

Mathematics
1 answer:
Elden [556K]3 years ago
8 0
You should upload the pic
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The 4th term in a geometric sequence is -15, the 5th term is 45 and the 6th term is -135. Find the sum of the first 7 terms.
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Answer:

d) 303 8/9

Step-by-step explanation:

4th term = ar^3  and 5th = ar^4   where a = first term and r = common ratio.

So ar^4 / ar^3

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Working back,:

The first term a = ar^3/ r^3

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Step-by-step explanation:

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Step-by-step explanation:

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