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ozzi
3 years ago
8

today, price of a new cell phone is $129. in 2000, the price of a similar cell phone was $240. what is the percent of change in

that price of a cell phone from 2000 to today?
Mathematics
1 answer:
Ludmilka [50]3 years ago
5 0
To figure this out, you put how much money you changed from then to now as your numerator. So you would have -111 over your original price, which is 240. now, all you have to do is do negative 111÷240 which should be 0.4625. then, to find your percent, all you have to do is move your decimal over to places to the right. 46% decrease!
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3 years ago
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kherson [118]

The solution to the given differential equation is yp=−14xcos(2x)

The characteristic equation for this differential equation is:

P(s)=s2+4

The roots of the characteristic equation are:

s=±2i

Therefore, the homogeneous solution is:

yh=c1sin(2x)+c2cos(2x)

Notice that the forcing function has the same angular frequency as the homogeneous solution. In this case, we have resonance. The particular solution will have the form:

yp=Axsin(2x)+Bxcos(2x)

If you take the second derivative of the equation above for  yp , and then substitute that result,  y′′p , along with equation for  yp  above, into the left-hand side of the original differential equation, and then simultaneously solve for the values of A and B that make the left-hand side of the differential equation equal to the forcing function on the right-hand side,  sin(2x) , you will find:

A=0

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yp=−14xcos(2x)

For more information about differential equation, visit

brainly.com/question/18760518

8 0
2 years ago
*20 points* Explain two barriers to entry for a new business.
Alex

Answer:

Government regulation, Economies of scale

Step-by-step explanation:

Barriers to entry are obstacles that make it difficult to enter a given market. ...

Government Regulation.

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3 years ago
Read 2 more answers
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Step-by-step explanation:

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The accompanying table shows the number of bacteria present in a certain culture over a 4 hour period, where x is the time, in h
Vlad [161]

Answer:

Step-by-step explanation:

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y = 9460

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3 years ago
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