State radius as function of time for volume of conical pile
The volume of the conical pile of sand is increasing at the rate of 9p ft3 / min, and height of pile always equals radius r of base. State r as the function of time t (in minutes), suppose that r = 0 when t = 0.
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A statistics teacher wants to grade test on a curve. She has found that the mean of test was 72% with standard deviation of 6%. If the teacher wants the top 15% of the class to get an A, what would be the cut-off score be? If middle 30% receive a
The rancher has 1200 feet of fencing to enclose 2 adjacent rectangular corrals of equal lengths and widths. State the area, A, of two rectangles as the function of width, x.
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For given graph of y = 1/2x and rotate it 45 degrees about origin, determine equation of image, domain, range and equations of asymptotes.
A biology teacher claims that average on her last test was 74. The scores of 12 students are as follows:
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Pizza Inn wanted to determine what proportion of its customers ordered only cheese pizza. Out of 90 customers, 11 ordered cheese pizza. What is the 98% confidence interval of the true proportion of customers who order only cheese pizza. Interpret
A score of 85 is earned on a test in which mean=100 and S=15. An equivalent score on a scale where mean=50 and S=10 is?
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