if the third term and the ninth term of an ap are 4 and -8. find the fifth term
Answers
Answered by
1
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
Answered by
0
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__
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