Question

1) -2, -4, -6 write common difference and dn+(f-d)?
2) first term = -3 common difference = 2
write dn+(f-d) and first term, second term and third term?
3) dn+(f-d) = -5n-3 what is the first term, second term and third term? ​

Answer 1

Answer:

hi

Step-by-step explanation:

Here, sum of all terms =750

2

n

​  

(a+l)=750

2

n

​  

(15+85)=750

n=15

Now, a  

15

​  

=85

a+14d=85

d=5

Thus, a  

6

​  

=a+5d=15+25=40

Answer 2

felling alone what can i do?