Respuesta :

Answer:

[tex]\Huge \boxed{\boxed{\textbf{45}}}[/tex]

Step-by-step explanation:

Given:

Sequence series

To find:

The next preceding term

Solution:

Step 1: Let's analyse the terms by substracting the following term by the previous term, e.g a_2 - a_1, a_3 - a_2.

→ a_2 - a_1 = 21 - 12 = 9

a_3 - a_2 = 23 - 21 = 2

→ a_4 - a_3 = 32 - 23 = 9

→ a_5 - a_4 = 34 - 32 = 2

a_6 - a_5 = 43 - 34 = 9

After analysing we noticed it's an arithmetic sequence with preceding adding terms of 9,2,9,2....

Step 2: So it's noticed after analysing that the last additional term was 9 so the next is mean't to be "2"

→ 43 + 2 = 45 (Matches - Option A)

Learn more about Arithmetic Sequence at https://brainly.com/question/28369191

Answer:

45(a)

Hope it helps!