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brookesquibbs
17.10.2019 •
Mathematics
What value of x is in the solution set of 3(x – 4) ≥ 5x 2? a) -10 b) -5 c) 5 d) 10
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Ответ:
3(x-4)=3*x+3*-4
=3x-12
Then we solve this as if it were an equation
3x-12≥5x+2
Minus 3x is
-12≥2x+2
Minus 2 is
-14≥2x
Which gets us that
You'll notice that this matches none of the choices, however, we are looking for the solution set, not the solution. In this case, it means any number that is less than 7. The correct answer is -10.
:)
Ответ:
B) -3 + I √55 over 4.