Mathematics, 28.06.2019 08:30 imoreno8412
Josie bought a new pair of jeans for $30 the sales tax rate at checkout was 7% what was josies total cost including sales tax?
Answers: 1
Mathematics, 21.06.2019 15:00
Which sum or difference identity would you use to verify that cos (180Ā° - ā
) = -cos ā
? a. sin (Ī± -Ī²) = sin Ī± cos Ī² ā cos Ī± sin Ī² b. cos (Ī± -Ī²) = cos Ī± cos Ī² ā sin Ī± sin Ī² c. cos (Ī± -Ī²) = cos Ī± cos Ī² + sin Ī± sin Ī² d. sin (Ī± + Ī²) = sin Ī± cos Ī² + cos Ī± sin Ī²
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 ā0.1315 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 āreal-worldā examples and uses of cobalt-60
Answers: 1
Mathematics, 21.06.2019 18:40
Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the studentsā ratios of science fiction books to history books. 1. determine the ratiosā form: āāāscience fiction books to history books 2. write the ratios as fractions: āāādexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.
Answers: 1
Mathematics, 21.06.2019 21:10
Aplane intersects a pris paralel to the base of the prism. the cross section is a polygon wth eight sides. how many sides does the base of the prism have? a. 10 b. 8 c. 7 d. 9
Answers: 1
Josie bought a new pair of jeans for $30 the sales tax rate at checkout was 7% what was josies total...
Mathematics, 20.09.2020 05:01
Mathematics, 20.09.2020 05:01
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Mathematics, 20.09.2020 05:01
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