Answers: 3
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 β0.1315 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 βreal-worldβ examples and uses of cobalt-60
Answers: 1
Mathematics, 21.06.2019 17:40
Atriangle has an area of 72 square inches. if the base of the triangle has a length of 18 inches, what is the height of the triangle? use the formula for the area of a triangle: area = (base)(height) type a numerical answer in the space provided. do not include the units or spaces in your answer.
Answers: 1
Mathematics, 21.06.2019 21:20
Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c
Answers: 3
Mathematics, 21.06.2019 22:40
Alina fully simplifies this polynomial and then writes it in standard form. xy2 β 2x2y + 3y3 β 6x2y + 4xy2 if alina wrote the last term as 3y3, which must be the first term of her polynomial in standard form? xy2 5xy2 β8x2y β2x2y
Answers: 1
What is the answer to 4x + 8x - 13 = 47...
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