Respuesta :

ogbuosinachi

Answer:

120

Step-by-step explanation:

Good morning ☕️

Answer:

8

Step-by-step explanation:

the formula : (sum of 15 consecutive term of an arithmetic sequence)

[tex]1+2+3+...+15=\frac{15*(15+1)}{2} =\frac{15*16}{2}=15*8\\[/tex]

Now,

[tex]Average=\frac{15*8}{15} =8[/tex]