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​

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Eva 1 month 2021-08-15T06:34:58+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-08-15T06:36:51+00:00

    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__

    0
    2021-08-15T06:36:55+00:00

    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

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