3 years ago

Help for this pls: PLS

Mathematics

1 answer:

Alja [10]3 years ago

4 0

The correct answer is c yourself ok

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Carpeting costs $9.99 a yard. If Jan buys 17.4 yards, how much will it cost her? (Round your answer to the nearest hundredth)

slega [8]

Answer:

173.83

Step-by-step explanation:

17.4*9.99= 173.826

173.826 -> 173.83

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An airplane travels 2951 miles in 6.5 hours. what is the speed of the airplane in miles per hour?

Gre4nikov [31]

The speed of the airplane = 2951 / 6.5 = 454 mph

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3 years ago

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dexar [7]

Answer:

c cause it says length = 5x

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<img src="https://tex.z-dn.net/?f=f%28x%29%20%3D%20%7Bx%7D%5E%7B2%7D%20%2B%204x%20-%205" id="TexFormula1" title="f(x) = {x}^{2}

frutty [35]

The inverse function theorem says

$\dfrac{\mathrm df^{-1}}{\mathrm dx}(16)=\dfrac1{\frac{\mathrm df}{\mathrm dx}(f^{-1}(16))}$

We have

$f(x)=x^2+4x-5$

defined on $x>-2$ , for which we get

$f^{-1}(x)=-2+\sqrt{x+9}$

and

$f^{-1}(16)=-2+\sqrt{16+9}=3$

The derivative of $f(x)$ is

$f'(x)=2x+4$

So we end up with

$\dfrac{\mathrm df^{-1}}{\mathrm dx}(16)=\dfrac1{\frac{\mathrm df}{\mathrm dx}(3)}=\dfrac1{10}$

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3 years ago

What is the sum of 7 3/16 + 3 3/4

Bess [88]

Answer:

Step-by-step explanation:

You have the right answer

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