Question

please help- 25 points

a sequence of numbers that are in AP starts with 5 and ends with 220. what is the sum of the 14th tern from the beginning ? ​

Answer 1

hey mate!

here is your answer:

step by step explanation:

first term (a)=5

last term (l)=220

number of terms n)=14

Sn = n/2[a+l]

Sn = 14/2[5+220]

Sn=7(225)

Sn=1575

Hope it helped^_^