Expand $\frac{2.3}{-71.32}$ by multiplying both numerator and the denominator by $100$.
\frac{230}{-7132}
Reduce the fraction $\frac{230}{-7132}$ to lowest terms by extracting and canceling out $2$.
-\frac{115}{3566}
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Question: What is the mean, mode, median, range, and average of the following dataset: 10, 15, 20, 15, 25, 15?
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What are the characteristics of a circle defined by the equation x^2 + y^2 = r^2? Explain the meaning of each term and how they determine the shape and properties of the circle.