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3 years ago

20x3 - 45x2 + 21x + 25 \ 4x - 5

Mathematics

1 answer:

tiny-mole [99]3 years ago

4 0

Answer:

80x3 - 180x2 + 109x - 20

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Step-by-step explanation:

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Hiya !

Aleksandr [31]

Answer:

root 25

Step-by-step explanation:

root 25 is 5, and every other number may not be able to be written as a whole number (please give brainliest)

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2 years ago

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-3(8n+10) <br> distributive property

Lerok [7]

-24n - 30, i suggest using math.way before asking a math question aha

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2 years ago

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Find the average value of the function on the given interval.<br> f(x)=2 ln x; [1,e]

JulijaS [17]

Answer:

$f_{avg}=\frac{1}{e-1}$

Step-by-step explanation:

We are given that a function

$f(x)=2lnx$

We have to find the average value of function on the given interval [1,e]

Average value of function on interval [a,b] is given by

$\frac{1}{b-a}\int_{a}^{b}f(x)dx$

Using the formula

$f_{avg}=\frac{1}{e-1}\int_{1}^{e}lnx dx$

By Parts integration formula

$\int(uv)dx=u\int vdx-\int(\frac{du}{dx}\int vdx)dx$

u=ln x and v=dx

Apply by parts integration

$f_{avg}=\frac{1}{e-1}([xlnx]^{e}_{1}-\int_{1}^{e}(\frac{1}{x}\times xdx))$

$f_{avg}=\frac{1}{e-1}(elne-ln1-[x]^{e}_{1})$

$f_{avg}=\frac{1}{e-1}(e-0-e+1)=\frac{1}{e-1}$

By using property lne=1,ln 1=0

$f_{avg}=\frac{1}{e-1}$

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3 years ago

Name the property the equation illustrates-4•(-1/4)=1

Nookie1986 [14]

Inverse property of multiplication
(a*1/a=1)

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3 years ago

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Which statement is always true?

ryzh [129]

The correct answer is C. <span>Similar polygons are never congruent.</span>

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3 years ago