Write an explicit formula for An, the nth term of the sequence 75, -15, 3, ....

Question

asked Feb 2, 2022 181k views

1 Answer

Nek · Answer 1 · 2022-02-06T10:41:04+0000

Answer:

aₙ = 75 * (-1/5)ⁿ⁻¹

Explanation:

75, -15, 3, ..

75, 75*(-0.2), 75*(-0.2)*(-0.2)

aₙ = a₁ * rⁿ⁻¹ a₁ = 75 r = - 1/5 (-0.2)