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alekssr [168]
2 years ago
5

Find the 7th term of the geometric sequence whose common ratio is 2/3 and whose first term is 4

Mathematics
1 answer:
BARSIC [14]2 years ago
8 0

Answer:

a_{7}=\frac{256}{729}   or   a_{7}=0.35

Step-by-step explanation:

a_{n} =a_{1}* r^{n-1}

a_{7}=4*\frac{2}{3}^{7-1}

a_{7}=4*\frac{2}{3}^{6}

a_{7}=4*\frac{64}{729}

a_{7}=\frac{256}{729}

or

a_{7}=0.35

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sveta [45]

Answer:

The answer is a = \frac{15}{4}

Step-by-step explanation:

We have to:

cos(\theta) = \frac{adjacent\ side}{hypotenuse}

So, if we take the 60 degree angle of the smallest triangle, we have to:

cos(60) = \frac{a}{x}

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a = cos(60)\frac{15}{2}

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7 0
3 years ago
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3 years ago
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andreev551 [17]

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Step-by-step explanation:

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aliya0001 [1]

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3 years ago
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