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? asked in Science & MathematicsMathematics · 3 years ago

Maths help?

The 4th term of an arithmetic sequence is 17

The 10th term of the same arithmetic sequence is 35

find the sum of the first 50 terms of the sequence

Update:

Maths help

1 Answer

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  • alex
    Lv 7
    3 years ago

    t4=a+3d = 17

    t10 = a+9d = 35

    solve for a , d

    then S50 = (25)(2a+49d) = ...

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