hellopeeps07
Answered

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What is the value of the 30th term in the following arithmetic sequence?

12, 6, 0, -6, ...

a. 186
b. -162
c. -186
d. 342

Sagot :

hoodiewithaboogie
Answer is C. -186

Because to find the nth term you need to see the pattern . It’s going down in -6 so -6n , then you do inverse to the first number , so +6 to 12 =18 . This makes -6n +18 . This is your formula just substitute n for 30 and you will get -162.

-6 x 30 = -180 , -180 + 18+ -162
LILIM13
I believe it’s b but I could be wrong
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