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AleksandrR [38]
3 years ago
7

Find the coordinates of the midpoint of the segment whose endpoints are H(9, 10) and

Mathematics
2 answers:
il63 [147K]3 years ago
8 0

mid point formula: \text{coordinates of midpoint= }\left(\dfrac{x_1+x_2}{2},\dfrac{y_1+y_2}{2}\right) \\ \text{distance between two points= } \sqrt{(x_2-x_1)^2+(y_2-y_1)^2)}

Leno4ka [110]3 years ago
4 0

Answer:   The coordinate of the midpoint is m ( 8   ,   8)     and the distance HK is 4.5

Step-by-step explanation:

To find the coordinates of the point of the segment whose endpoints are H(9,10) and K(7,6), we simply use this formula;

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

                     

x_{1}  =  9      y_{1}  =  10          x_{2}  =   7          y_{2}   =   6

m(x_{m} ,  y_{m})     =  m  (\frac{9 + 7}{2}            ,       \frac{10  +  6}{2}     )

   

                       = m (\frac{16}{2}         ,            \frac{16}{2}          )

                          =m (  8   ,     8)

The coordinate of the midpoint is m (  8   ,     8)

To find the distance HK,

let D = distance HK

D  =   √ (x_{2}  -  x_{1} )^{2}    +    (y_{2} - y_{1})  ^{2}

       =  √(7 - 9)²   +   (6 - 10)²

       =  √(-2)²   + (-4)²

      =  √4  +  16

       

       =√20

      = 4.5  

The distance HK is 4.5

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The orthocenter is (-4,8)


<u>EXPLANATION</u>


The orthocenter is  the point of intersection of all the altitudes of a triangle.

If it is a right angle triangle then the orthocenter is the point at which the <em>right angle is made.</em>

If it is not a right angle triangle, then you have to find the equations of any two of the altitudes and solve simultaneously.

So you must first check to see if it is a right angle triangle that way you do not have to do bunch work.


The given triangle has vertices J(-4,-1), (-4,8), and L(2,8).


Slope_{JK}=\frac{8--1}{-4--4}


Slope_{JK}=\frac{8+1}{-4+4}


Slope_{JK}=\frac{9}{0}


Since the denominator is zero, the slope is undefined.

If the slope of a straight line is undefined, then that line is <em>parallel to the y-axis</em>. In other words, it is a <em>vertical line</em>.


Slope_{JL}=\frac{8--1}{2--4}


Slope_{JL}=\frac{8+1}{2+4}


Slope_{JL}=\frac{9}{6}


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Slope_{KL}=\frac{8-8}{2--4}


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Slope_{KL}=0


if a straight line has a slope of zero, that line is parallel to the <em>x-axis</em> or it is <em>horizontal.</em>


From the slopes we can see that side KL of the triangle is horizontal and side JK is vertical. This two sides will meet at right angles at K.

See graph.

Therefore the coordinates of K, (-4,8) is the orthocenter of the given triangle.







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