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Emah

  • 2 years ago

Given segment AB with endpoints A(2x, 4y) and B(10, 22), what is the midpoint? A.(2x+5, 4y+11) B.(x+2 ½ , y+5 ½) C.(2x-10, 4y-11) D.(x+5, 2y+11) I know the midpoint formula, but it doesnt seem to work out right. Can someone explain it to me...

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  1. gaara438125
    • 2 years ago
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    \[\frac{ x1 + x2 }{ 2 }, \frac{ y1 + y2 }{ 2 }\]

  2. gaara438125
    • 2 years ago
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    \[\frac{ 10 + 2x }{ 2 }, \frac{ 22 + 4y }{ 2 }\] now simplify those fractions

  3. Emah
    • 2 years ago
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    ok thanks. the only thing that confuses me is the variables. but let me try it real fast ...

  4. gaara438125
    • 2 years ago
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    you can look at it like \[\frac{ 10 + 2 }{ 2 }\] then just remember to add the x back in on the top

  5. Emah
    • 2 years ago
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    |dw:1352321643254:dw|

  6. gaara438125
    • 2 years ago
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    no\[ \frac{ 10 + 2x }{ 2 } = \frac{ 10 }{ 2 } + \frac{ 2x }{ 2 }\] same with the other side

  7. Emah
    • 2 years ago
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    but then i already got the answer of A....

  8. gaara438125
    • 2 years ago
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    10/2 = 5 2x/2 = x 5 + x is the left side, you do the right side

  9. Emah
    • 2 years ago
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    oops lol i wrote it 2 different ways and i wrote the wrong one on here instead of the one in my notebook.

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