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B) The standard deviation of Ms. Minster’s class is higher. C) Both standard deviations are the same. D) Standard deviation cannot be calculated from the data. Answer Key & Explanations Explanation: Combine the fractions to get . This simplifies to . Squaring both sides gives Explanation: Testing points: . All match the table. Explanation: , which simplifies to . Taking logs gives . The minimum year is 10. Explanation: are complementary ( Explanation: In a square, the diagonal . The diameter of the inscribed circle equals the side , so the radius Explanation: hard sat questions math
This is a classic "Discriminant" problem, but it can also be solved by visualizing the graph. A quadratic equation has exactly one distinct real solution when its vertex touches the x-axis. This occurs when the discriminant ($b^2 - 4ac$) equals zero. Ready to create a quiz
In , 16 out of 23 students (nearly 70%) have the exact same score ( ). This data is very "tightly packed" around the average. C) Both standard deviations are the same
