Question

Find the sum of the arithmetic progressions 50, 46, 42

Answer 1

Answer:

Here you go

Step-by-step explanation:

here is your answer hope it is correct

Answer 2

Step-by-step explanation:

n=10

first term, a=a1=50

common difference, d=a2 - a1 = 46-50 = -4

By using the formula,

S=n/2(2a+(n-1)d)

Substitute the value of 'a' and 'd',

S= 10/2(100+(a)(-4))

=5(100-36)

=5(64)

=320

So, the total AP is 320. :)