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3 years ago

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PLS HELP ME WITH THIS EQUATION! Find X

2%7Dx%20-%204x" id="TexFormula1" title="{3}^{2}x - 32 = {2}^{2}x - 4x" alt="{3}^{2}x - 32 = {2}^{2}x - 4x" align="absmiddle" class="latex-formula">

1 answer:

Vesnalui [34]3 years ago

5 0

Answer:

$3x^{2} -32=2x^{2} -4x\\3x^{2} -2x^{2} +4x-32=0\\x^{2} +4x-32=0\\x^{2} -4x+8x-32=0\\x(x-4)+8(x-4)=0\\(x-4)(x+8)=0\\x-4=0 \ or\ x+8=0\\x=4\ or\ x=-8$

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Answer:

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Step-by-step explanation:

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2 years ago

What is the length of the line segment between point (-5,8) and point (-5,-4).

dedylja [7]

Answer:

12 would be the distance between the two points

Step-by-step explanation:

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2 years ago

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If A(3,4) and B(10,4) are the end points of a diameter of circle "O", what is the area of the circle O

ikadub [295]

Answer:

$\large\boxed{\dfrac{49\pi}{4}}$

Step-by-step explanation:

The formula of an area of a circle:

$A=\pi r^2$

<em>r</em> - radius

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The formula of a distance between two points:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Substitute the coordinates of the given points A(3, 4) and B(10, 4):

$d=\sqrt{(10-3)^2+(4-4)^2}=\sqrt{7^2+0^2}=\sqrt{7^2}=7$

Therefore we have the length of the diameter: <em>d = 7</em>

We know: <em>d = 2r.</em> Therefore

$r=\dfrac{7}{2}$

Substitute to the formula of an area:

$A=\pi\left(\dfrac{7}{2}\right)^2=\dfrac{49\pi}{4}$

<em>There is no such answer in the answers to choose.</em>

<em>Apparently you have some error in the coordinates of the endpoints.</em>

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3 years ago

Rewrite each expression as a sum <br> -8x^2 + 3xy - 9x - 3

Gnesinka [82]

$-8x^2 + 3xy - 9x - 3
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3 years ago

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Answer:

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Step-by-step explanation:

I am going to assume you are trying to write the equation of a line.

4x + y = 10

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