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
Answer:
Step-by-step explanation: 45% based on the way you state the question. 45% is a whole percent.
To find x, divide 13.1 by 150 to get <span>0.08733333333.</span>