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:
4-2(16)+4
Step-by-step explanation:
Answer:
25
Step-by-step explanation:
Brainliest please I haven't gotten it before
Answer:
14
Step-by-step explanation:
The inequality would be 14 be cause you can see where it would either be open or filled but either way it would be 14
