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if a1 = -4, a25 = -100, what is the value of a100?

formula = d = an - ak
_____
n - k

find the specified nth term of each arithmetic sequence. show solution pls. thank uu

Sagot :

Reynaldmobo04go

Answer:

an = a1 + (n-1)d

-100 = -4 + (25-1)d

-100 + 4 = 24d

-96 = 24d

-4 = d

a100 = a1 + (100-1)(-4)

a100 = -4 - 396

a100 = 400

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