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5 January, 03:34

Which number is a solution to the inequality?

6 > z (10 - z)

a. 0

b. 1

c. 2

d. 3

+5
Answers (2)
  1. 5 January, 05:51
    0
    Answer is a.

    6>z (10-z) | z (10-z) <6 | 10z-z^2<6 | - z^2+10z-6<0

    Multiply by - 1: z^2-10z+6>0
  2. 5 January, 07:11
    0
    6 > z (10 - z)

    6 > 10z - z^2

    z^2 - 10z^2 + 6 < 0

    z > 9.36, z < 0.64

    Therefore, option a is the correct answer.
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