Fine sum of the following series: 5+5.5+6+_ _ _ _ to 20 terms
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HERE IS UR ANSWER..
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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...
:-)
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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