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Maurinko [17]
3 years ago
6

Which expression represents 10 in rational exponent form?

Mathematics
1 answer:
SSSSS [86.1K]3 years ago
5 0
The correct answer is C
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Solve the equation of exponential decay. The population of a city is expected to be 440,000 in 2020. This is a decline of 12% fr
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Answer:

about 340,000

Step-by-step explanation:

In 10 years, the population dropped to 0.88 of what it was in 2010. At the same rate, in 20 more years, it will drop to 0.88² of what it was in 2020:

2040 population = 440,000·0.88² ≈ 340,000

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Thanks for the points lol

Step-by-step explanation:

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Factor the expression completely over the complex numbers. y^4+24y^2+144
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25y^6 +144

I think this is right :)

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3. (6 Points). Solve the initial value problem y'-y.cosx=0, y(pi/2)=2e
Stells [14]

Answer:

y=2e^{sin(x)}

Step-by-step explanation:

Given equation can be  re written as

\frac{\mathrm{d} y}{\mathrm{d} x}-ycos(x)=0\\\frac{\mathrm{d} y}{\mathrm{d} x}=ycos(x)\\\\=> \frac{dy}{y}=cox(x)dx\\\\Integrating  \\ \int \frac{dy}{y}=\int cos(x)dx \\\\ln(y)=sin(x)+c............(i)

Now it is given that y(π/2) = 2e

Applying value in (i) we get

ln(2e) = sin(π/2) + c

=> ln(2) + ln(e) = 1+c

=> ln(2) + 1 = 1 + c

=> c = ln(2)

Thus equation (i) becomes

ln(y) = sin(x) + ln(2)

ln(y) - ln(2) = sin(x)

ln(y/2) = sin(x)

y= 2e^{sinx}

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3 years ago
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You have to divide 86 by 18 .which she can make about 5 necklaces
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