Wilson Lindsey
02/16/2024 · High School
1) \( \left(\sqrt[3]{\frac{1}{3}}\right)^{x+6}>\frac{1}{9} \)
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Tutor-Verified Answer
Step-by-step Solution
To solve the inequality
\[
\left(\sqrt[3]{\frac{1}{3}}\right)^{x+6} > \frac{1}{9},
\]
we start by rewriting the left-hand side. The expression \(\sqrt[3]{\frac{1}{3}}\) can be expressed as:
\[
\sqrt[3]{\frac{1}{3}} = \left(\frac{1}{3}\right)^{1/3} = 3^{-1/3}.
\]
Thus, we can rewrite the left-hand side of the inequality:
\[
\left(\sqrt[3]{\frac{1}{3}}\right)^{x+6} = \left(3^{-1/3}\right)^{x+6} = 3^{-\frac{1}{3}(x+6)}.
\]
Now, we rewrite the right-hand side \(\frac{1}{9}\):
\[
\frac{1}{9} = 3^{-2}.
\]
Now, we can rewrite the inequality as:
\[
3^{-\frac{1}{3}(x+6)} > 3^{-2}.
\]
Since the base \(3\) is positive and greater than \(1\), we can compare the exponents directly:
\[
-\frac{1}{3}(x+6) > -2.
\]
To eliminate the negative sign, we multiply both sides by \(-1\) and reverse the inequality:
\[
\frac{1}{3}(x+6) < 2.
\]
Next, we multiply both sides by \(3\):
\[
x + 6 < 6.
\]
Now, we subtract \(6\) from both sides:
\[
x < 0.
\]
Thus, the solution to the inequality is:
\[
\boxed{(-\infty, 0)}.
\]
Quick Answer
The solution to the inequality is \( x < 0 \).
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