Question

2. What is the 10th term of the A.P: 21, 1 point
18. 15. 12.
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Answer 1

Answer:

$a_{10}$=-6

Step-by-step explanation:

so basically

given series is 21,18,15,12....

so a=21

     d=18-21=-3 so all are equal to -3 in this series so its an AP

therefore $a_{10}$=a+9d

                    =21+9*(-3)=21-27=  -6

so $a_{10}$=6...

so that's ur answer

Answer 2

Answer:

a = 21

d = 18 - 21 = -3

a10 = a + 9d

= 21 + 9*(-3)

= 21 - 27

= -6

Step-by-step explanation:

hope this helps u...........