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clare07
25.06.2019 •
Mathematics
What is the common ratio of the geometric sequence? -2, 4, -8, ,16, -13
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Ответ:
step-by-step explanation:
goog be able to you with that maybe
Ответ:
see explanation
step-by-step explanation:
since the sequence is geometric there is a common ratio r between consecutive terms, that is
r = 4 ÷ - 2 = - 2
r = - 8 ÷ 4 = - 2
r = 16 ÷ 8 = - 2
the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.
the first 4 terms are therefore geometric with common ratio r = - 2
Ответ:
where "n" is number of sides
The formula is dependent on the side^2 term,
So, if we have an octagon that has sides 4 times as large, that means the area will be sixteen times larger.
side^2 = 4^2 = 16
So we multiply 25 cm^2 by 16 and we get
400 square centimeters.
Source:
http://www.1728.org/polygon.htm