Respuesta :

Answer:

7

Step-by-step explanation:

As you can see, each time (let's say n) increases by 1, it divides by 1/2. So from a1 to a2, you get 28/2 or 14, then from a2 to a3, 14/2 or 7.

7 being your answer.

mhanifa

Answer:

  • 7

Step-by-step explanation:

Given the recursive formula.

  • [tex]a_1=28\\a_n=1/2a_{n-1}[/tex]

Use it to determine the value of te third term.

  • [tex]a_3=1/2a_2=1/2(1/2a_1) = 1/4a_1=1/4(28) = 7[/tex]

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