3 years ago

Plz answer correctly. its for a test

Mathematics

1 answer:

4vir4ik [10]3 years ago

5 0

Answer:

the third one

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wolverine [178]

Answer:

$t_7 =\frac{5}{729}$

Step-by-step explanation:

We are given that:

First term (a) = 5

common ratio (r) = $\frac{1}{3}$

The nth term of a geometric sequence is given as:

$t_n =ar^{n-1} \\\therefore t_7 =5\times \bigg(\frac{1}{3}\bigg) ^{7-1} \\\therefore t_7 =5\times \bigg(\frac{1}{3}\bigg) ^{6} \\\therefore t_7 =5\times \bigg(\frac{1}{3}\bigg) ^{6} \\\therefore t_7 =5\times \frac{1}{729}\\\\\huge\red{\boxed{\therefore t_7 =\frac{5}{729} }}$

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3 years ago

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disa [49]

Answer:

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Step-by-step explanation:

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2 years ago

Whats a prime number

skelet666 [1.2K]

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by 14 1 4 each week for a number of weeks, w . He writes the expression 20(14) 20 ( 1 4 ) w to find the amount of radioactive su

erastovalidia [21]

Answer:

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hope this helps

Step-by-step explanation:

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