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Find the 10th term of an arithmetic sequence if t1 = 2.1 and t4 = 1.83. ``
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According to the given data;
`T_1 = a = 2.1`
`T_4 = 1.83`
nth term of a arithmetic series is given by;
`T_n = a+(n-1)d`
`T_4 = 2.1+(4-1)d = 1.83 `
`2.1+(4-1)d = 1.83`
`d = -0.09`
`T_10 = a+9d`
`T_10 = 2.1+9xx(-0.09)`
`T_10 = 1.29`
So the tenth term of the series is 1.29.
Posted by jeew-m on September 17, 2013 at 8:13 PM (Answer #1)
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