Concept explainers
Temperature An object at a temperature of
where
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Chapter 5 Solutions
College Algebra
- A high school charters a bus for $560 to take a group of students to an observatory. When 8 more students join the trip, the cost per student decreases by $3.50. How many students were in the original group?arrow_forwardTraffic Signal Traffic engineers study how long the yellow light for a traffic signal should be. For one intersection, the number of seconds n required for a yellow light is related to the average approach speed v, in feet per second, by n=1+v30+100v. If the approach speed is 80 feet per second about 55 miles per hour, how long the yellow light be?arrow_forwardGravity While putting up holiday decorations, Bob dropped a decoration from the top of a tree that is 12 feet tall. Simplify 12121612 to find how many seconds it took for the decoration to reach the ground. Round to the nearest tenth of a second.arrow_forward
- Medical Drugs When a certain medical drug is administered to a patient, the number of milligrams remaining in the patients bloodstream after t hours is modeled by D(t)=50e0.2t How many milligrams of the drug remain in the patients bloodstream after 3 hours?arrow_forwardThe temperature of an object in degrees Fahrenheit after t minutes is represented by the equation T(t)=68e0.0174t+72. To the nearest degree, what is the temperature of the object after one and a half hours?arrow_forwardLeaf blower the intensity of the sound from a certain leaf blower is measured at 3.2102W/m2 .find the describe 1level .arrow_forward
- The population of a wildlife habitat is modeledby the equation P(t)=3601+6.2e0.35t where t isgiven in years. How many animals were originallytransported to the habitat? How many years will ittake before the habitat reaches half its capacity?arrow_forwardThe annual percentage yield (APY) of an investmentaccount is a representation ofthe actual interest rateearned on a compounding account. It is based on acompounding period of one year. Show that the APYof an account that compounds monthly can be foundwith the formula APY=(1+r12)121.arrow_forwardThe resistance of a copper wire carrying an electrical current is directly proportional to its length and inversely proportional to its cross-sectional area. A copper wire with a diameter of 0.0126inch has a resistance of 64.9ohms per thousand feet. What length of 0.0201-inch-diameter copper wire will produce a resistance of 33.5ohms?arrow_forward
- Glencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw Hill
- Algebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:CengageAlgebra: Structure And Method, Book 1AlgebraISBN:9780395977224Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. ColePublisher:McDougal LittellHolt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGAL