11-03-2021
Mathematics

contestada

65 POINTS PLEASE ANSWER SOON
If the fourth term of an Arithmetic sequence is 48 and the third term is 36...

(A) What is the first term?

(B) What is the twelfth term?

Respuesta :

oofergang398 oofergang398

11-03-2021

Answer:

1st term is 12

12th term is 144

Step-by-step explanation:

48-36=a4-a3=a1 so a1 is equal to 12 now to get from a3 to a4, you must add 12, so d=12.

a12=12+11*12=12+132=144

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