Mathematics, 28.07.2019 01:00 lilquongohard
Which of the following statement is false regarding operations with matrices? a.)ab≠ba b.)you can square a 3 x 1 matrix c.)if a b, and c are all m x n matrices, then a+(b+c)=(a+b)+c d.) if r is a matrix scalar, then ra=ar
Answers: 1
Mathematics, 21.06.2019 15:00
The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. the front two wheels are six feet apart. what is the number of feet in the path traced by the inside front wheel in one trip around the circle? express your answer in the form "k \pi", where k is an integer.
Answers: 3
Mathematics, 21.06.2019 16:00
Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?
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 −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
Which of the following statement is false regarding operations with matrices? a.)ab≠ba b.)you can s...
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