Question

ayudenme por favor ;-;

Answer 1

Respuesta:

A = 3660

Explicación paso a paso:

a₂ = 4

a₁ = 2

aₙ = 120

d = a₂ - a₁

d = 4 - 2

d = 2

n = (aₙ - a₁) / d  + 1

n = (120 - 2) / 2  + 1

n = 118 / 2 + 1

n = 59 + 1

n = 60

Sₙ = (aₙ + a₁)n / 2

Sₙ = (120 + 2)60 / 2

Sₙ = (122)*30

Sₙ = 3660

A = 3660