How many solution does this linear system have 2x-y=7 y=2x+3
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Answers: 2
Mathematics, 21.06.2019 16:50, lunamoon1
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
Answers: 1
Mathematics, 21.06.2019 18:30, locomexicano03
The distance between two cities is 368 miles. if the scale on the map is 1/4 inch=23 miles, what is the distance between the cities on the map?
Answers: 3
Mathematics, 21.06.2019 21:50, safiyyahrahman8937
Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?
Answers: 1
Mathematics, 21.06.2019 22:30, 713073
Which statements about the system are true? check all that apply. y =1/3 x â 4 3y â x = â7 the system has one solution. the system consists of parallel lines. both lines have the same slope. both lines have the same yâintercept. the equations represent the same line. the lines intersect.
Answers: 2
Mathematics, 03.05.2021 18:40
English, 03.05.2021 18:40
World Languages, 03.05.2021 18:40