Find the length of the unknown side of the right triangle. If the answer is not a whole number, approximate it to one decimal place.
A. 19 cm
B. 14 cm
C. 20 cm
D. 11 cm
Answer: C
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Solve the problem.At a particular business, it is required that the temperature be kept at 76°F, but the thermostat is calibrated in degrees Celsius. Find the temperature to be set. If necessary, round to the nearest tenth of a degree.
A. 168.8°C B. 24.4°C C. 25.4°C D. 143.2°C
Find a polynomial with the given zeros. ? 5, 6 ?
A. 
B. ?
C. ?
D. ?
E. none of these
Solve the problem.The table shows the number of new cases of a certain disease among women in six consecutive years. Data are in thousands rounded to the nearest hundred.YearNew Cases (thousands)20053.020063.420074.620085.420096.0201016.1Let x = 1 correspond to 2005 and let y be the number of new cases (in thousands) among women in year x. Find a quadratic function to model the data. Round to three decimal places if necessary.
A. y = 0.623x2 - 5.645x + 8.69 B. y = 6.69x2 - 3.645x + 0.823 C. y = 0.823x2 - 3.645x + 6.69 D. y = 0.945x2 - 5.212x + 8.921
A laboratory technician records the life span (in months) of rats treated at birth with a fertility hormone. From the following frequency distribution, find the sample standard deviation of life span. Life span (months)Midpoint xFrequency fProduct xf-0.5 - 2.5 11 2.5 - 5.5 20 5.5 - 8.5 21 8.5 - 11.5 29 11.5 - 14.5 19 Please round your answer to the nearest whole number, if necessary.__________ months
Fill in the blank(s) with the appropriate word(s).