if the third term and the ninth term of an ap are 4 and -8. find the fifth term Question if the third term and the ninth term of an ap are 4 and -8. find the fifth term in progress 0 Math Eva 1 month 2021-08-15T06:34:58+00:00 2021-08-15T06:34:58+00:00 2 Answers 0 views 0

## Answers ( )

Step-by-step explanation:a^3=4

a+ 2d=4 …….(1)

a^9=-8

a+2d=4

a+8d=-8

– – =+

-6d =12

d= -2

put in d vale in eq( 1)

a+2d=4

a+ 2(-2)=4

a-4=4

a=4+4=8

a=8

a^5 =a+4d =8+4(-2)

=8-8=0

a^5=0 answer__

Answer:T3=4,T9=-8,T5=

Step-by-step explanation:a+2d=4,a+8d=-8

solving these 2 equations

3a=24

a=8,d=-2

a+4d=8+4(-2)=0