Question

resolve essa pfv, determine o 50 termo da PA(-5,-10,-15,..)

Answer 1

r = -10 - (-5) = -10 + 5 = -5

an = a1 + (n-1)r

a50 = -5 + (50 - 1). -5

a50 = -5 + (-245)

a50 = -5 - 245 = - 250