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katovenus [111]

3 years ago

8

Julie recently drove to visit her parents who live 120 miles away. On her way there her average speed was 20 miles per hour fast

er than on her way home (she ran into some bad weather). If Julie spent a total of 5 hours driving, find the two rates.

1 answer:

mart [117]3 years ago

5 0

40mph average there totaling 3 hours, 60mph back, totaling 2 hours. 5 hours total.

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Which recursive formula can be used to generate the sequence shown, where f(1) = 5 and n > 1?

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Step-by-step explanation:

Recursive formula is the formula that is used to generate the next term of a sequence using previous term.

The general form of arithmetic sequence's recursive formula is:

$a_n = a_{n-1}+d$

Given

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Here

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First of all we have to find the common difference of the sequence.

So,

$d = a_2 -a_1 = -1-5 = -6\\d = a_3-a_2 = -7+1 = -6$

Putting the value of d in the general recursive formula

$a_n = a_{n-1}-6$

Hence,

The recursive formula $a_n = a_{n-1}-6$ can be used to generate the shown sequence

Keywords: Sequence, arithmetic sequence

Learn more about arithmetic sequence at:

#LearnwithBrainly

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