Mathematics, 06.11.2020 18:30 silasjob09
Decide if each pair is parallel, perpendicular, or neither. y = ¼x + 5 and 4x + y = 4 *
4 points
Parallel
Perpendicular
Neither
Answers: 2
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With these: 18/36 = 1/? missing number change 1 5/8 to improper fraction. change 19/5 to a mixed number.
Answers: 1
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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
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You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?
Answers: 1
Mathematics, 21.06.2019 20:00
Choose the linear inequality that describes the graph. the gray area represents the shaded region. a: y ≤ –4x – 2 b: y > –4x – 2 c: y ≥ –4x – 2 d: y < 4x – 2
Answers: 2
Decide if each pair is parallel, perpendicular, or neither. y = ¼x + 5 and 4x + y = 4 *
4 points
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