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3 years ago

Me and my Roomate have an apartment for $1,895.

Mathematics

2 answers:

kakasveta [241]3 years ago

8 0

$1,047.50 so she has to pay that amount

Ne4ueva [31]3 years ago

5 0

Your roommate would have to pay $847.5 since you are willing to pay $100 more than her

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3 years ago

The temperature in Baku, Azerbaijan dropped over five hours from zero degrees Fahrenheit to negative fifteen degrees Fahrenheit.

e-lub [12.9K]

Answer:

its either 3 or -3 hopefully someone in the comments can tell which

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3 years ago

What work do i need to show?

stealth61 [152]

You have to show finding the square root of it ______ ___ __
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3 years ago

A source of information randomly generates symbols from a four letter alphabet {w, x, y, z }. The probability of each symbol is

koban [17]

The expected length of code for one encoded symbol is

$\displaystyle\sum_{\alpha\in\{w,x,y,z\}}p_\alpha\ell_\alpha$

where $p_\alpha$ is the probability of picking the letter $\alpha$ , and $\ell_\alpha$ is the length of code needed to encode $\alpha$ . $p_\alpha$ is given to us, and we have

$\begin{cases}\ell_w=1\\\ell_x=2\\\ell_y=\ell_z=3\end{cases}$

so that we expect a contribution of

$\dfrac12+\dfrac24+\dfrac{2\cdot3}8=\dfrac{11}8=1.375$

bits to the code per encoded letter. For a string of length $n$ , we would then expect $E[L]=1.375n$ .

By definition of variance, we have

$\mathrm{Var}[L]=E\left[(L-E[L])^2\right]=E[L^2]-E[L]^2$

For a string consisting of one letter, we have

$\displaystyle\sum_{\alpha\in\{w,x,y,z\}}p_\alpha{\ell_\alpha}^2=\dfrac12+\dfrac{2^2}4+\dfrac{2\cdot3^2}8=\dfrac{15}4$

so that the variance for the length such a string is

$\dfrac{15}4-\left(\dfrac{11}8\right)^2=\dfrac{119}{64}\approx1.859$

"squared" bits per encoded letter. For a string of length $n$ , we would get $\mathrm{Var}[L]=1.859n$ .

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3 years ago

5x+10=7x+4 what is the answer to this equation

Gennadij [26K]

<u>answer:</u> $x = 5$

$5x+10=7x+4$ | subtract 5x and move it over to the 7x, and solve

$10 = 2x + 4$ | subtract 4 and move it over to the 10, and solve

$6 = 2x$ | divide by 2

$3 = x$ | final answer

hope this helps! ❤ from peachimin

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4 years ago