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3 years ago

For Ms. Small birthday, her class bought her a watch for $76.50 and a Make-up kit for $23.95

Mathematics

1 answer:

iren2701 [21]3 years ago

4 0

Answer: Each student will pay about $4.78

Step-by-step explanation: You have to add 76.50 and 23.95 and you will get 100.45 then divide by 21 and your product is $4.78. Hope it helped.

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Step-by-step explanation:

We are given a geometric sequence as:

6,-18,54,-162,.....

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Let $a_n$ represents the nth term of the sequence.

This means that:

$a_1=6, a_2=-18, a_3=54, a_4=-162,......$

As the common ratio is -3.

so,

$a_1=6\\\\a_2=-18=(-3)\times a_1\\\\a_3=54=(-3)\times a_2\\\\.\\.\\.\\.\\.\\.\\.\\.\\.a_n=(-3)\times a_{n-1}$

Hence, the required recursive formula for the geometric sequence is:

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