Concept explainers
Use the four-step procedure for solving variation problems given on page 445 to solve Exercises 21–36.
31. Body-mass index, or BMI, takes both weight and height into account when assessing whether an individual is underweight or overweight. BMI varies directly as one’s weight, in pounds, and inversely as the square of one’s height, in inches. In adults, normal values for the BMI are between 20 and 25, inclusive. Values below 20 indicate that an individual is underweight and values above 30 indicate that an individual is obese. A person who weighs 180 pounds and is 5 feet, or 60 inches, tall has a BMI of 35.15. What is the BMI, to the nearest tenth, for a 170-pound person who is 5 feet 10 inches tall? Is this person overweight?
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Chapter 3 Solutions
COLLEGE ALGEBRA ESSEN.-COMBO ACCESS
- Body mass index (BMI) is a measure of body composition, which can be used to assess if someone is underweight, healthy weight, overweight but not obese, or obese. It is calculated as a person’s weight (measured in Kilograms) divided by his/her height (measured in meters) squared. We recorded 5 students’ BMI values and the numbers of hours they exercised in the past week, as following: BMI 18.4 19.6 20.5 27.6 30.6 Hours of exercise 3.0 2.5 4.0 2.7 0.5 What is the value of r?arrow_forwardsummarraize the concentration of the drug in the bloodstream for the first 20 hours afetr it is taken. use the findings from a-e to validate your statementsarrow_forwardStatistics Questionarrow_forward
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- plot Domestic Load Factor 82.5 75.0 67.5 K Here is a timeplot of each monthly load factor for domestic flights for 2002 to 2017 along with a lowess smooth. Answer parts a and b. p 2004 Click the icon to view the timeplot. a) Describe the patterns you see in this plot. Print 2008 2012 Decimal Year Done 2016 - Xarrow_forwardWhat are the uses of dispersion?arrow_forward.Normal human blood pressure varies by age. The table below gives the average blood normal systolic blood pressure in mm Hg and corresponding age. Age(in year) 5 10 17 32 52 62 Blood Pressure 75 90 105 110 116 121 a Find the power law model that relates age and blood pressure. b. Use the model to estimate the normal systolic blood pressure for a person who is 21 years old.arrow_forward
- Elementary Geometry for College StudentsGeometryISBN:9781285195698Author:Daniel C. Alexander, Geralyn M. KoeberleinPublisher:Cengage LearningElementary Geometry For College Students, 7eGeometryISBN:9781337614085Author:Alexander, Daniel C.; Koeberlein, Geralyn M.Publisher:Cengage,College Algebra (MindTap Course List)AlgebraISBN:9781305652231Author:R. David Gustafson, Jeff HughesPublisher:Cengage Learning