angeliascott21 angeliascott21
  • 25-07-2020
  • Mathematics
contestada

find the 10th term of a geometric sequence whose first tow terms are 2 and -8

Respuesta :

lucasella
lucasella lucasella
  • 25-07-2020

Answer:

t10 = - 2¹⁹= -524288

Step-by-step explanation:

t1=2

t2=-8

r=t2/t1=-8/2=-4

t10=t1*r⁹

t10=2*(-4)⁹= -2*(2²)⁹

t10= -2¹⁹= -524288

Answer Link
maforchrist
maforchrist maforchrist
  • 25-07-2020

Answer:

-524288

Step by step

so use the formula

ar^n-1

so

a is first term

r is common ratio

n is number of terms

so

get r which is -8/2=-4

then apply

2×(-4^9)=answer

not sure

Answer Link

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