Question

Find the 9th term of AP with first term -20 and common difference 4

Answer 1

${n}^{th} \: term = 4n - 24 \\ {9}^{th} \: term \: = 4 \times 9 - 24 = 36 - 24 = 12$

Answer 2

Answer:

a₉ =12

Step-by-step explanation:

a₉= ?

a₁ =-20

d = 4

n = 9

a₉= a+(n-1) d

  = -20+(9-1) 4

= -20+8*4

   = -20 +32

 a₉= 12

hope this helps u