Mathematics, 21.03.2021 02:20 1991987
A plane is flying h meters above the ground. At a particular instant, the angle of
elevation of the plane from the eyes of a boy sitting on the ground is 60°. After some
time, the angle of elevation changed to 30°. Find the distance covered by the plane during
that time assuming it travelled in a straight line.
Answers: 1
Mathematics, 21.06.2019 16:10
The probability that a college student belongs to a health club is 0.3. the probability that a college student lives off-campus is 0.4. the probability that a college student belongs to a health club and lives off-campus is 0.12. find the probability that a college student belongs to a health club or lives off-campus. tip: p(a or b) = p(a) + p(b) - p(a and b) 0.54 0.58 0.70 0.82
Answers: 2
Mathematics, 21.06.2019 16:20
Consider the function y = f(x)=3^x the values of f(1/2) and f(1/4). rounded to the nearest hundredth, are__and__ respectively
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 −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
Mathematics, 21.06.2019 17:00
Jasmine wants to eat at 8: 00pm her meal takes 65mins to cook what time does she need to put the meal in the oven
Answers: 2
A plane is flying h meters above the ground. At a particular instant, the angle of
elevation of the...
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