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What is the value of $x$? Statement (I): $x^2 - 7x + 12 = 0$ Statement (II): $x > 3.5$ (A) Statement (I) alone is sufficient, but Statement (II) alone is not sufficient. (B) Statement (II) alone is sufficient, but Statement (I) alone is not sufficient. (C) Both Statements (I) and (II) together are sufficient, but neither Statement alone is sufficient. (D) Statements (I) and (II) together are not sufficient.
The correct answer is (C). **Step-by-step breakdown:** **Objective:** Determine the unique numerical value of $x$. **Analyze Statement (I) alone:** Statement (I) provides the equation: $x^2 - 7x + 12 = 0$. This is a quadratic equation, which can be solved by factoring: $(x-3)(x-4) = 0$ This yields two possible values for $x$: $x=3$ or $x=4$. Since there are two possible values for $x$, Statement (I) alone is not sufficient to determine a unique value for $x$. **Analyze Statement (II) alone:** Statement (II) provides the inequality: $x > 3.5$. This inequality indicates that $x$ can be any real number greater than 3.5 (e.g., 3.6, 4, 5.1, etc.). Since there are infinitely many possible values for $x$ that satisfy this condition, Statement (II) alone is not sufficient to determine a unique value for $x$. **Analyze Statements (I) and (II) together:** From Statement (I), we know that $x$ can be either $3$ or $4$. From Statement (II), we know that $x$ must be greater than $3.5$. Let's evaluate each possible value from Statement (I) against the condition in Statement (II): 1. If $x=3$: Is $3 > 3.5$? No, this is false. 2. If $x=4$: Is $4 > 3.5$? Yes, this is true. By combining both statements, the only value of $x$ that satisfies both conditions is $x=4$. Therefore, both Statements (I) and (II) together are sufficient to determine a unique value for $x$. **Conclusion:** Statement (I) alone is not sufficient. Statement (II) alone is not sufficient. Statements (I) and (II) together are sufficient. This matches option (C).
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