Ineed with a which is find the length of all sides

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The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant. given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.

In order to be invited to tutoring or extension activities a students performance 20 point higher or lower than average for the

Interpret the following expression (5y^2-7)^3/(2y)^2