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2 years ago

Who knows how to do this I TRULY NEED HELP

Mathematics

1 answer:

grigory [225]2 years ago

3 0

It’s 59°
cause 74+47=121
180-121=59

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If x = 2 and y = -3, what is the value of 2x^2 + 3xy – 2y^2?

sammy [17]

Answer: Given as,X=2 & Y=3,

now multiplying we get,

2xxy=2×2×3=12

Ans.) 12

Step-by-step explanation:

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1 year 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

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so that we expect a contribution of

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For a string consisting of one letter, we have

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

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2 years ago

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Ilia_Sergeevich [38]

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Step-by-step explanation:

I don't really know how to put it into an equation- but here's your values?? Sorry if this didn't help ):

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2 years ago

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Aleks [24]

Answer:

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The solution is on the photo below

Hope this helped. Have a great day!

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2 years ago

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finlep [7]

120^ is the answer for this problem

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