Question

write an explicit rule for the n th term if the sequence. 125, 50 , 20, 8,....

Answer 1

Answer:

aₙ=125*(2/5)ⁿ⁻¹

Step-by-step explanation:

125, 50 , 20, 8,....

50/125=20/50=8/20=2/5

• a₁=125
• a₂=50 = 125*2/5
• a₃= 20=125*(2/5)²
• a₄=8 = 125*(2/5)³
• ...
• aₙ=125*(2/5)ⁿ⁻¹

Hope it helps