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Black_prince [1.1K]
3 years ago
5

Can anyone help me with this?

Mathematics
1 answer:
matrenka [14]3 years ago
5 0

Answer:

\sqrt{7}

Step-by-step explanation:

Given

4\sqrt{7} - 10\sqrt{7} + 7\sqrt{7} ( add the coefficients of the terms )

= (4 - 10 + 7) \sqrt{7}

= 1\sqrt{7}

= \sqrt{7}

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Find the circumcenter of the triangle (-2,4) (-2,-1) (1,-1)
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Answer:

<em>( </em>-\frac{1}{2}<em> , </em>\frac{3}{2}<em> )  </em>

Step-by-step explanation:

( x_{1} , y_{1} )

( x_{2} , y_{2} )

Coordinates of midpoint are

( \frac{x_{1} +x_{2} }{2} , \frac{y_{1} +y_{2} }{2} )

~~~~~~~~~~~~~~~~~~~~

The figure is right triangle.

The circumcenter is the middle of the hypotenuse.

( - 2, 4 )

( 1 , - 1 )

<em>( </em>-\frac{1}{2}<em> , </em>\frac{3}{2}<em> ) </em>

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Answer:

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Step-by-step explanation:

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ivolga24 [154]

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Step-by-step explanation:

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3 years ago
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Use factoring to solve the quadratic equation x2 − 2x − 3 = 12.
melomori [17]

Answer:

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Step-by-step explanation:

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x^{2}-2x-3-12=0

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