Math, asked by ThanuCL, 1 year ago

Fine sum of the following series: 5+5.5+6+_ _ _ _ to 20 terms

Answers

Answered by Anonymous
13
HEY BUDDY....

HERE IS UR ANSWER..

_____________________

A.T.Q

a = 5 ; n = 20 ; d = 0.5 ; S(20) = ?

=> Sn = 1 /2 ( 2 a + ( n - 1 ) d )

=> S ( 20 ) = 10 ( 2 × 5 + ( 19 ) 0.5 )

=> S ( 20 ) = 10 ( 10 + 9.5 )

=> S ( 20 ) = 19.5 × 10

=> S ( 20 ) = 195

HOPE HELPED..

HAVE A NICE DAY...

:-)

Anonymous: my pleasure miss
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