Ask Question
22 August, 15:48

Seventy-five times an integer, minus 36, equals 21 times the square of the integer. Which equation could be used to solve for the unknown integer?

+1
Answers (1)
  1. 22 August, 17:23
    0
    75n-36=21n^2 rearrange so we have an equation equal to zero ...

    21n^2-75n+36=0 divide whole equation by 3

    7n^2-25n+12=0 now factor ...

    7n^2-21n-4n+12=0

    7n (n-3) - 4 (n-3) = 0

    (7n-4) (n-3) = 0

    Since this is an integer 4/7 is extraneous.

    The integer value is 3
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Seventy-five times an integer, minus 36, equals 21 times the square of the integer. Which equation could be used to solve for the unknown ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers