👤

please po pasagot with complete solutions
5. In an arithmetic sequence, if a8 = 51 and a 13= 91, find al, d and a 25.


Sagot :

Answer:

a1=-5

d=8

a25=187

Step-by-step explanation:

an=8n-13

a1=8(1)-13=-5

a2=8(2)-13=3

a8=8(8)-13=51

a13=8(13)-13=91

a25=8(25)-13=187

-5+8=3

Step-by-step explanation:

can you mark me as a brainliest??