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gayaneshka [121]
3 years ago
10

Y=x+4, 2x+y=13 solve the following system of equation. Please help

Mathematics
1 answer:
alexandr1967 [171]3 years ago
7 0
Well you have to subtract -2 to both sides and it well look like Y= -2+13 and then y=x+4
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A _____ consists of two or more inequalities. At least one of these is nonlinear
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Step-by-step explanation:

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3 years ago
<img src="https://tex.z-dn.net/?f=%20log_%7B2%7D%283x%20%2B%204%29%20%20-%207%20log_%7B4%7D%7Bx%7D%5E%7B2%7D%20%20%2B%20%20log_%
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First of all, we need all logarithms to have the same base. So, we use the formula

\log_a(b)=\dfrac{\log_c(b)}{\log_c(a)}

To change the second term as follows:

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Finally, using the property

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\dfrac{\log_2(x^2)}{2}=\log_2(x)

So, the equation becomes

\log_2(3x+4)-7\log_2(x)+\log_2(x)=2 \iff \log_2(3x+4)-6\log_2(x)=2

We can now use the formula

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\log_2(3x+4)-6\log_2(x)=2 \iff \log_2(3x+4)-\log_2(x^6)=2 \iff \log_2\left(\dfrac{3x+4}{x^6}\right)=2

Now consider both sides as exponents of 2:

\dfrac{3x+4}{x^6}=4 \iff 4x^6-3x-4=0

This equation has no "nice" solution, so I guess the problem is as simplifies as it can be

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Answer:

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Step-by-step explanation:

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