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4 years ago

Plz help i will mark brainlest if correct

Mathematics

2 answers:

velikii [3]4 years ago

5 0

We should get extra points for decoding the question. Is that computer generated?

It's easier for us if you type it in using math symbols, with lots of parentheses for clarity, or just post a photo.

$(-3)^{-5} = \dfrac{1}{x}$

what is the value of x?

That's straightforward:

$x = \dfrac{1} {(-3)^{-5}} = (-3)^5 = -243$

Answer: -243

Andrew [12]4 years ago

4 0

Answer:

A. -243

Step-by-step explanation: PLZ MARK BRAINLIEST!!

I got It right on the quiz

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3 years ago

Find the line integral of f(x, y) = y e^X^2 along the curve r(t) = 3t i - 4t J, -2 lessthanorequalto t lessthanorequalto -1. The

Semenov [28]

$\vec r(t)=3t\,\vec\imath-4t\,\vec\jmath$

$\implies\left\|\dfrac{\mathrm d\vec r(t)}{\mathrm dt}\right\|=\|3\,\vec\imath-4\,\vec\jmath\|=\sqrt{3^2+(-4)^2}=5$

The line integral of $f(x,y)$ along the curve $C$ parameterized by $\vec r(t)$ is

$\displaystyle\int_Cf(x,y)\,\mathrm ds=\int_{-2}^{-1}f(3t,-4t)\left\|\dfrac{\mathrm d\vec r(t)}{\mathrm dt}\right\|\,\mathrm dt=-20\int_{-2}^{-1}te^{9t^2}\,\mathrm dt$

Substitute $u=9t^2$ so that $\mathrm du=18t\,\mathrm dt$ . Then

$\displaystyle\int_Cf(x,y)\,\mathrm dS=-\frac{20}{18}\int_{36}^9e^u\,\mathrm du=\frac{10}9\int_9^{36}e^u\,\mathrm du=\boxed{\frac{10}9(e^{36}-e^9)}$

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4 years ago

The total cost of a compact disc, including a 6% sales tax, is $14.31 what is the price before tax

bonufazy [111]

Answer:$13.50

Step-by-step explanation:

First thing you want to do is find what is 6% of 14.31. You can find this using your calculator and putting the percentage in decimal form then multiplying it by the given amount. 0.06 x 14.31 = ? And then you take that number and subtract it from 14.31.

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3 years ago

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svetlana [45]

Answer:

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Step-by-step explanation:

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3 years ago

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