Mathematics, 20.07.2021 22:00 jak000067oyyfia
A person can plow all the driveways on his street with his new four-wheel-drive truck in 6 hours. Using a snow blade on a lawn tractor, his neighbor can plow the same number of driveways in 9 hours. How long would it take them to do the work together?
Answers: 3
Mathematics, 21.06.2019 13:30
What value of x is in the solution set of –5x – 15 > 10 + 20x?
Answers: 1
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 −0.1315 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 “real-world” examples and uses of cobalt-60
Answers: 1
Mathematics, 21.06.2019 20:00
One hectometer is a) 1/1000 of a meter. b) 1/100 of a meter. c) 10 meters. d) 100 meters. e) 1000 meters.
Answers: 1
A person can plow all the driveways on his street with his new four-wheel-drive truck in 6 hours. Us...
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