Question

From the following ap,find the 20th term -3,-7,-11,-15...

Answer 1

Answer:

-79

Step-by-step explanation:

a=-3,d=-7-(-3)=-7+3=-4

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

$t_{20}$=-3+(20-1)(-4)

   =-3+19(-4)

   =-3-76

   =-79

Answer 2

Answer:

Step-by-step explanation:

a₂₀= -79