In an Algebra class, the scores on a test are normally distributed. The middle 68% of the scores fall between 70 and 82. What are the mean and standard deviation for this data? Standard Normal Curve

Mean:

Standard Deviation:
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a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.

b is the answer that makes most sense

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is means division by fractions

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step-by-step explanation:

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