Question

find the 20th term of an A.P. 4,9,14,19,.....​

Answer 1

Answer:

I help u and I Know u can solve it taking a=4 and d=5 then take formula a+(n-1)d put it in this formula then solve it n=20 plz take it as positive

Answer 2

${a_{n} = a + (n-1)d}$

Here,

n = 20

a = 4

d = 9 - 4 = 14 - 9 = 5

So, using the equation we get

${a_{20} = 4 + (20-1)5}$

${a_{20} = 4 + 19(5)}$

${a_{20} = 4 + 95}$

${a_{20} = 99}$