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3 years ago

6

a lab uses negative numbers to describe a car moving backward on a road if the car was at -75.5 feet ,went forward 23 feet and t

hen forward again 14.5 feet where is the car now

1 answer:

never [62]3 years ago

6 0

Did you that that God loves you and wants the best for you

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A man invests in a bank he gets 3% per year compound interest his final balance is £10927.27 after 3 years what was his investme

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3 years ago

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Solve the differential equation. y' + 5xey = 0.

galben [10]

Answer:

The solution is $y = - ln(\frac{5}{2}x^{2} + C)$

Step-by-step explanation:

To solve the differential equation, we will find $y$

From the given equation, y' + 5xey = 0.

That is, $y' + 5xe^{y} = 0$

This can be written as

$\frac{dy}{dx} + 5xe^{y} = 0$

Then,

$\frac{dy}{dx} = - 5xe^{y}$

$\frac{dy}{e^{y}} = - 5x dx$

Then, we integrate both sides

$\int {\frac{dy}{e^{y}}} =\int {- 5x dx}$

$\int {e^{-y}dy }} =\int {- 5x dx}$

Then,

$-e^{-y} = -\frac{5}{2}x^{2} + C$

$e^{-y} = \frac{5}{2}x^{2} + C$

Then,

$ln(e^{-y}) = ln(\frac{5}{2}x^{2} + C)$

Then,

$-y = ln(\frac{5}{2}x^{2} + C)$

Hence,

$y = - ln(\frac{5}{2}x^{2} + C)$

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3 years ago

What is the simplified form of x+9/2x+3+x+4/x+2?

Mice21 [21]

The answer is C because multiply and divide by (x+2)(2x+3)
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= (3x^2+22x+30) / (2x^2+7x+6)

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Delicious77 [7]

Answer:

Slope = $-\frac{2}{3}$

Step-by-step explanation:

Slope = $\frac{rise}{run}$

Slope = $\frac{y2-y1}{x2-x1}$

Slope = $\frac{4-2}{-3-3}$

Slope = $-\frac{4}{6}$

Slope = $-\frac{2}{3}$

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4 years ago

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The access code for a vault consists of four digits. The first digit

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Answer:

5 * 10 * 10 * 9 = 4500

Step-by-step explanation:

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3 years ago

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