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Serggg [28]
3 years ago
13

If 2y - x = 8 , and 3x - y = 1, what is the value of x ?

Mathematics
2 answers:
Sophie [7]3 years ago
6 0
Order in ax+by=c form
-1x+2y=8 and
3x-y=1
cancle y's
multiply 2nd equation by 2
and add to first

-1x+2y=8
<u>6x-2y=2 +</u>
5x+0y=10

5x=10
divide both sides by 5
x=2

the value of x is 2
vlabodo [156]3 years ago
3 0
Hello.

The answer to your question is 
x = 2
and y = 5

Have a great day!
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Write the equation of the line that satisfies the given conditions. Express the final equation in standard form.
Anton [14]

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The equation of line with given points and perpendicular to y-axis is

y = - 7  

Step-by-step explanation:

Given as :

The given points as ( - 10 , - 7)

The equation of line is Y = mX + c

So The line will satisfy given points

Or,  - 7 = m ( -10 ) + c

Now This line is perpendicular to y- axis

∴ The slop of line perpendicular to  y axis is 0

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or, c = - 7

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This question has several parts that must be completed sequentially. If you skip a part of the question, you will not receive an
Lapatulllka [165]

Answer:

Step-by-step explanation:

Given that there is a function of x,

f(x) = 2sin x + 2cos x,0\leq x\leq 2\pi

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x=\frac{\pi}{4}, \frac{3\pi}{4}

f"(\pi/4)

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Minimum value = 2sin 3\pi/4+2cos 3\pi/4 =-2\sqrt{2}

c)

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are points of inflection.

concave up in (3pi/4,7pi/4)

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3 0
3 years ago
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