Question

Insert 3 arithmetic means between - 5 and 3..?
Find a1 if a8=54 and a9 =60..?
With solutions plss!
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Answer 1

Answer:

how to do it

Step-by-step explanation:

how to do it

I shuweh in ehe

Answer 2

Answer:

Step-by-step explanation:

a8=54

a+7d=54

a+8d=60

d=6

a=12

3=a+d(n-1)

3=12+d(5-1)

-9=d4

d=-9/4

now you find the arthimetic means by a+d,a+2d,a+3d

d=-9/4