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3 years ago

1,Find the eighth term of the geometric sequence whose 1st term is 5 and whose 4th term is

Mathematics

1 answer:

jeka943 years ago

6 0

Answer:

Solution will be 1/15625

Step-by-step explanation:

Substitute the value of first term for ar^(4-1) for the third term with 1/25 on RHS, make r the subject (which is the common ratio)

you'll get r as 1/5

Now for the eighth term, replace the "4" in the formula with "8" and a with "5" and observe the magic.

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Zepler [3.9K]

Answer:

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Step-by-step explanation:

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3 years ago

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Misha Larkins [42]

Answer:

30°

Step-by-step explanation:

BF is a straight line, so therefore it is equal to 180°

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3 years ago

Graph the line that contains the point(-7,-4) and has a slope of -2/3

hodyreva [135]

Answer:

Place one at (-7,-4) and the other at (-4,-6)

Step-by-step explanation:

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3 years ago

40 hours is what part of 120 hours

Yanka [14]

Answer:

1/3 part of 120 hours....

8 0

3 years ago

Braxton loves downloading new music he originally had 41 songs but plans to purchase 4 new songs each week. he wants to know how

ycow [4]

Answer:

$a_110=41+(110-1)4$

Step-by-step explanation:

He already has songs = 41

Since we are given that he purchase four songs every week .

So, in first week he purchase songs = 4

Initially he already has 41 songs

So, total songs after 1 week = $41+(4\times1)=45$

After 2 weeks he will have songs = $41+(4\times 2)=49$

This forms an arithmetic sequence : 41,45,49......

Formula of nth term in A.P. : $a_n=a+(n-1)d$

a = first term = 41

d = common difference = 45-41=49-45=4

Since we are required to find the new songs after110 weeks

So, n =110

Substituting values :

$a_110=41+(110-1)4$

Thus Option A is correct.

4 0

3 years ago