paytonpaige22
06.01.2020 •
Mathematics
Which statement is true?
a.
the solution is nonviable because the percentage filled cannot be negative.
b.
the solution is nonviable because the time cannot be negative.
c.
the solution is nonviable because the time cannot be partial minutes.
d.
the solution is viable.
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Ответ:
-3x^2 + 243 = 0
Bring 243 to the right.
-3x^2 = -243
Divide by -3.
x^2 = 243/3 = 81
Tak the square root of both sides.
x = 81^1/2 = 9.