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dezoksy [38]
2 years ago
8

the price of a ps5 is $500 but it is sold out in stores. You can purchase one on ebay for $800. What is the percent change of th

e price of a PS5
Mathematics
2 answers:
statuscvo [17]2 years ago
8 0

Answer:

beinggreat78~here~to~help!

The price increased by %60. Why? Because 160% of 500 is 800, so that must mean the percent only increased by 60.

Darina [25.2K]2 years ago
8 0
The price is increased 60
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Ugo [173]
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3 years ago
D^2(y)/(dx^2)-16*k*y=9.6e^(4x) + 30e^x
MA_775_DIABLO [31]
The solution depends on the value of k. To make things simple, assume k>0. The homogeneous part of the equation is

\dfrac{\mathrm d^2y}{\mathrm dx^2}-16ky=0

and has characteristic equation

r^2-16k=0\implies r=\pm4\sqrt k

which admits the characteristic solution y_c=C_1e^{-4\sqrt kx}+C_2e^{4\sqrt kx}.

For the solution to the nonhomogeneous equation, a reasonable guess for the particular solution might be y_p=ae^{4x}+be^x. Then

\dfrac{\mathrm d^2y_p}{\mathrm dx^2}=16ae^{4x}+be^x

So you have

16ae^{4x}+be^x-16k(ae^{4x}+be^x)=9.6e^{4x}+30e^x
(16a-16ka)e^{4x}+(b-16kb)e^x=9.6e^{4x}+30e^x

This means

16a(1-k)=9.6\implies a=\dfrac3{5(1-k)}
b(1-16k)=30\implies b=\dfrac{30}{1-16k}

and so the general solution would be

y=C_1e^{-4\sqrt kx}+C_2e^{4\sqrt kx}+\dfrac3{5(1-k)}e^{4x}+\dfrac{30}{1-16k}e^x
8 0
3 years ago
Use the distributive property to rewrite each algebraic expression.
r-ruslan [8.4K]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

First, we are decreasing the number so it has to be a decrease.

Next, we divide 7/31 and get around 0.23, which also represents 23 percent.

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We get 100 - 23 = 77, and because it is a decrease we get B.

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Answer:

tt

Step-by-step explanation:

7vito6u

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