The first term of an arithmetic progression is 80 and the common difference is -3. what is the greatest possible sum of the firs
t n terms of this sequence, and for which value of n does it occur?
I need help with this question, in advance thank you :)
1 answer:
Answer:
S=157
Step-by-step explanation:
an= a1+(n-1)d
a2=80+(2-1)(-3)
a2=80-3
a2=77
Sn=(a1+an)*n/2
S2=(80+a2)*2/2
S2=(80+77)*1
S2=157
You might be interested in
For sum u add and for difference you subtract
16 ounce bag of rice for $0.04 per unit
Girl i don’t know but i hope you find your answer boo
Answer:
D. x=10, y=12
Step-by-step explanation:
Answer:i dont understand the question what country or countries??????????
Step-by-step explanation:
