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storchak [24]
3 years ago
10

Please help me right away with both problems.

Mathematics
2 answers:
nevsk [136]3 years ago
8 0

3) aₓ = 3x + 2

Plug in numbers for x (for example, 1,2,3,4).

a₁ = 3(1) + 2; a₁ = 3 + 2; a₁ = 5

a₂ = 3(2) + 2; a₂ = 6 + 2; a₂ = 8

a₃ = 3(3) + 2; a₃ = 9 + 2; a₃ = 11

a₄ = 3(4) + 2; a₄ = 12 + 2; a₄ = 14

5, 8, 11, 14, or (C) is your answer

-----------------------------------------------------------------------------------------------------------------

4) 23, 17, 11, 5

Plug in the following numbers to the equations until they match.

C) tₐ = 29 - 6n


when n = 1:

tₐ = 29 - 6(1) ; tₐ = 29 - 6 ; tₐ = 23

tₐ = 29 - 6(2) ; tₐ = 29 - 12 ; tₐ = 17

etc.

-----------------------------------------------------------------------------------------------------------------

hope this helps

3241004551 [841]3 years ago
4 0

Problem 3.

Use the positive integers for n in increasing order starting with 1. First use n = 1, then n = 2, then n = 3, etc. Replace n with an integer, and solve for an.

a_n = 3n + 2

a_1 = 3(1) + 2 = 3 + 2 = 5

a_2 = 3(2) + 2 = 6 + 2 = 8

a_1 = 3(3) + 2 = 9 + 2 = 11

a_4 = 3(4) + 2 = 12 + 2 = 14

Answer: 5, 8, 11, 14

Problem 4.

The first number in the sequence is 23. Each term is then 6 less than the previous term.

t_1 = 23

t_2 = 23 - 6 \times 1

t_3 = 23 - 6 \times 2

Start with 29 - 6, then 29 - 12, 29 - 18.

t_1 = 29 - 6 = 29 - 6 \times 1

t_2 = 29 - 12 = 29 - 6 \times 2

t_3 = 29 - 18 = 29 - 6 \times 3

t_n = 29 - 6n

Answer: t_n = 29 - 6n

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