MalloriT
MalloriT MalloriT
  • 21-12-2021
  • Mathematics
contestada

PLEASE HELP ME I'M GIVING OUT LOTS OF POINTS!!

PLEASE HELP ME IM GIVING OUT LOTS OF POINTS class=

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 02-01-2022

Answer:

  (d)  a1 = 11

Step-by-step explanation:

Put the numbers in the given formula and solve for a1.

  a5 = 176 = a1(r^(5-1)) = a1·r^4

  a7 = 704 = a1(r^(7-1)) = a1·r^6

Dividing a7 by a5 gives ...

  a7/a5 = (a1·r^6)/(a1·r^4) = r^2 = 704/176 = 4

Then a1 is ...

  a1 = a5/(r^4) = 176/(r²)² = 176/(4²) = 11

The first term is 11.

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Аноним Аноним
  • 05-01-2022

Hi, mal :> hehehe

( its [tex]a_{1} = -11[/tex])

Your welcome..... ;]

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