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elena55 [62]
4 years ago
13

PLEASE HELP PLEASE WILL GIVE BRAINLIEST!!!!!!! A retain arithmetic sequence has the following explicit formula for the nth term:

Mathematics
1 answer:
SashulF [63]4 years ago
7 0

In the given question,the given explicit formula is

a_{n) = 4+(n-1)(7)

Which is of the form

a_{n} = a +(n-1)(d)

So the constant difference is 7 here.

Now for the recursive formula

To find the next term, we need to add 7 to the current term, that is

a_{n} = a_{n-1} +7

So the correct option is B

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Question 1 answer: The first and last option.

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The equation which can be used to find the number of quarters and nickels is; n + q = 84, 0.05n + 0.25q = 17.80.

<h3>Quarters and nickels</h3>

  • Total coins = 84
  • Total value = $17.80

let

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  • Number of nickels = n

n + q = 84

0.05n + 0.25q = 17.80

From equation (1)

n = 84 - q

Substitute into (2)

0.05n + 0.25q = 17.80

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Therefore, the number of quarters and nickels are 68 and 16 respectively.

Learn more about quarters and nickels:

brainly.com/question/17127685

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