The first term in an arithmetic sequence is 5. The fourth term in the sequence is −4. The tenth term
is −22.
Which function can be used to find the nth term of the arithmetic sequence?

Answers

Answer 1

Answer:

         aₙ = -3n + 8

Step-by-step explanation:

The nth term of an arithmetic sequence:  aₙ = a₁ + d(n - 1)

{d = common difference}

a₁ = 5

a₄ = 5 + d(4 - 1)

-4 = 5 + 3d

-4 - 5 = 3d

3d = -9

 d = -3

Therefore;

                  aₙ = 5 + (-3)(n - 1)

                   aₙ = -3n + 8

Check:  a₁₀ = 5 + (-3)(10 - 1) = 5 - 27 = - 22

Answer 2

The nth term of the sequence is Tn = 8 - 3n

How to determine the function of the nth term?

The given parameters are:

a = 5, first term

T4 = -4 --- the 4th term

T10 = -22 --- the 10th term

The nth term of an arithmetic sequence is:

Tn = a + (n - 1) * d

So, we  have:

T4 = a + (4 - 1) * d

Substitute known values

-4 = 5 +(4 -1) * d

This gives

-4 = 5 + 3d

Subtract 5 from both sides

3d = -9

Divide by 3

d = -3

Recall that:

Tn = a + (n - 1) * d

So, we have:

Tn = 5 + (n - 1) * -3

Expand

Tn = 5 + 3 - 3n

Solve

Tn = 8 - 3n

Hence, the nth term of the sequence is Tn = 8 - 3n

Read more about arithmetic sequence at:

https://brainly.com/question/6561461


Related Questions

Use the following function rule to find f(6).
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Answers

f(6)=6(6)+11
answer:47

Answer:

X=-11/6

Steps

f(x)=6x+11

simplify,

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Answer:

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Answers

Answer:

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Answers

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Answers

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Answer:

the right answer is 1/12

Step-by-step explanation:

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What is the slope of the line that
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Answers

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____________________________________________________________

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Answers

Answer:

Step-by-step explanation:

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Answers

Answer:

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Answer:

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Answers

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Answers

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6. The table shows the number of manatee deaths caused by watercraft in Florida each year
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2
3
4
5
6
7
8
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Answers

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Answers

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Answers

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Answers

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Answers

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+

Answers

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Answers

Answer:

y=30x+25

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24 + 8x + 10(2x)
Terms:
Constants:
Coefficients:

Answers

terms: 24, 8x, 10(2x)
constants: 24
coefficients: 8, 10, 2

What’s the answer????

Answers

Answer:

I believe its 10 but forgive me if I'm wrong

48/6 = 8 highlights in each box

2
(
3
r
+
4
)

3
(
r
+
1
)
=
11

Answers

Hey there!


ASSUMING

2(3r + 4) - 3 (r + 1) = 11

IF SO

2(3r + 4) - 3 (r + 1) = 11

2(3r + 4) - 3 (1r + 1) = 11

DISTRIBUTE

2(3r) + 2(4) - 3(1r) - 1(1) = 11

6r + 8 - 3r - 1 = 11

COMBINE the LIKE TERMS

(6r - 3r) + (8 - 3) = 11

6r - 3r + 8 - 3 = 11

3r + 5 = 11


SUBTRACT 5 to BOTH SIDES

3r + 5 - 5 = 11 - 5

SIMPLIFY!

3r = 11 - 5

3r = 6

DIVIDE 3 to BOTH SIDES
3r/3 = 6/3


SIMPLIFY!

r = 6/3

r = 2


Therefore, the answer should be: r = 2


Good luck on your assignment & enjoy your day!

~Amphitrite1040:)

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