Mathematics, 18.08.2019 22:30 vaniavidal666
The average of the weights of six people sitting in a boar is 145 pounds. after a seventh person gets into the boat, the average of the weights of all seven people in the boat is 147 pounds. what is the weights ( in pounds ) of the seventh person ?
a) 160, b) 159, c) 155, d) 149, e) 147
Answers: 2
Mathematics, 21.06.2019 16:50
The rate of decay of a radioactive substance depends upon the amount present initially. the mass y (mg) of the radioactive substance cobalt-60 present in a sample at time t (years) is represented by the exponential equation y=50e â0.1315 t . answer the following questions in complete sentences. 1. how does the exponential equation above compare to the equation for simple interest that is compounded continuously? explain the similarities. 2. what is the initial amount of cobalt-60 in the sample? 2. how much cobalt-60 is left after 8.4 years? show your work. 3. what would be the y-intercept of the graph? what does it represent? 4. after how many years will the amount of cobalt-60 left be 6.25 mg? explain what happens to the cobalt-60 after 50 years? 5. discuss some âreal-worldâ examples and uses of cobalt-60
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Mathematics, 21.06.2019 18:00
The only way to identify an intercept is as an ordered pair. true false
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Mathematics, 21.06.2019 18:30
Nick has box brads. he uses 4 brads for the first project. nick letâs b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.
Answers: 3
Mathematics, 21.06.2019 19:30
In need of in the diagram, â abc is a right angle. â dbc = 30°27'40". find the measure of â abd.
Answers: 1
The average of the weights of six people sitting in a boar is 145 pounds. after a seventh person get...
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