Math, asked by meghanaperla1234, 1 year ago

If 3t times the 4th term of an AP is equal to 9times its 10the term,then show that's 23is zero.


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Answers

Answered by tvbaranidharan
5

Answer:

Step-by-step explanation:

3*a4=9*a10

3(a+3d)=9(a+9d)

3a+9d=9a+81d

-6a=72d

a=-12d

Answered by ashauthiras
3

Answer:

Given,

If 3 times the 4th term of an A.P is equal to 9 times its 10th term.

So,

3 × a(4) = 9 × a(10)

=> 3 ( a + 3d ) = 9 ( a + 9d )

=> 3a + 9d = 9a + 81d

=> 3a - 9a = 81d - 9d

=> -6a = 72d

=> a = -12d....(1)

Now,

a(23) = a + 22d

-12d + 22d [ From (1) ]

= 10d

•°•a(23) is not equal to zero

Step-by-step explanation:

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