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The first 7 Fibonacci numbers are 1,1,2,3,5,8,13,... each number in the sequence is the sum of the previous two numbers. Thus 13=8+5 and 8=5+3. (a) What are the eighth and ninth Fibonacci numbers? (b) What do you get if you subtract the 8th Fibonacci number from the 9th Fibonacci number?

Respuesta :

Answer:

A: 21, 34; B: 13

Step-by-step explanation:

Part A:

OK to find this answer you just need to add the 6th and 7th terms together:

[tex]8 + 13 = 21\\[/tex]

Then you add your new 8th term (this term being 21) to your 7th term to get the ninth term:

[tex]13 + 21 = 34[/tex]

Part B:

If you subtract the 9th term by the 8th term you'll get the 7th term. This is because to get the 9th term the 7th and 8th terms needed to be added together. So you'd get 13 by subtracting the 8th term from the 9th term because it is the 7th term.

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