Question

if the sum of first 14 term of an AP is 1050 and its first term is 10 find the 20th term ?​

Answer 1

Step-by-step explanation:

N/2[2a + (n-1)d] = Sn14

14/2[2×10 + (14-1)d =1050

7 [20 +13d] =1050

20+13d. = 1050/7

13d = 150-20

13d. = 130

d. = 10

So

a = 10

d = 10

T20 = a+ (n-1)d

T20 = 10 + (20-1) 10

T20 = 10 +19×10

T20 = 10 +190

T20 = 200

so the 20th term is 200.

Hope it will help u .

Answer 2

Answer:

200

step by step explanation:

refer the attachment mate

answer with quality

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