Math, asked by deekshitha7152, 1 year ago

Find the value of t30 - t20 for -9,-14,-19..... are in an ap

Answers

Answered by aashutosh1393

7

Tn= a +(n-1)d
a=-9
d-5
T30=-154
T20=-104
T30-T20
=-154-(-104)
-154+104
=-50

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