Find X
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The parabola opens: y=√x-4 (principal square root) up down right left

Solutions for 2x+7 less than or equal to 3x-5

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?