What Are The First And Last Terms Of An Arithmetic Sequence When Is Arithmetic Means Are 35,15 And -5?

What are the first and last terms of an arithmetic sequence when is arithmetic means are 35,15 and -5?

 

Answer:

first term 55 last term -25

Step-by-step explanation:

first term 55

55 - 20 = 35

second term 35

35 - 20 = 15

third term 15

15 - 20 = -5

fourth terms -5

-5 - 20 = -25

last term 25

d=20

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