Math! Help Hurry!

posted by JT

Two vertices of a right triangle have the coordinates (−2, 5) and (9, 5) .

What is the length of the side formed by these vertices?

  1. Scott

    same y-coordinates

    a vertical line

    length is the difference of the x-coordinates

  2. damiensandowz

    Let A (-2,5) be (x1,y1) and B(9,5) be (x2,y2).

    Using distance formula,

    distance^2(d^2)=(x2-x1)^2+(y2-y1)^2
    = [9-(-2)]^2 + [5-5]^2
    = 11^2 + 0^2
    = 11^2
    = 121

    Now, converting the above information to its square root to obtain the actual length.

    distance (d)= /121
    = 11 units.

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