Ceciliaah Ceciliaah
  • 15-08-2018
  • Mathematics
contestada

how would I do this problem?

how would I do this problem class=

Respuesta :

gmany
gmany gmany
  • 19-08-2018

If it's a geometric sequence then:

[tex]a_1=27;\ a_2=27\\\\r=\dfrac{a_2}{a_1}\to r=\dfrac{27}{36}=\dfrac{3}{4}=0.75\\\\a_{n+1}=a_nr\\\\a_3=27\cdot0.75=20.25\ CORRECT[/tex]

We calculate the fourth and fifth term of the sequence:

[tex]a_4=a_3r\to a_4=20.25\cdot0.75=15.1875\\\\a_5=a_4r\to a_5=15.1875\cdot0.75=11.390625[/tex]

Answer:

In year 4 15.1875 animals.

In year 5 11.390625 animals.

Answer Link

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