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28 July, 23:06

James wants to draw a line diagonally across a rectangular piece of paper. If the paper measures 9 inches by 12 inches, what is the minimum length of the straight-edge he needs to make the line? Grupo de opciones de respuesta 15 inches 21 inches

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  1. 28 July, 23:19
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    15 inches

    Explanation:

    James needs to use the Pythagoras theorem, which states that in a right-angle triangle, the sum of the squares of the other two sides is equal to the square of the hypotenuse.

    c²=a²+b²

    we know that a is 9 inches and that be is 12 inches

    c² = (9) ² + (12) ²

    c² = 81+144

    c²=225

    c=√225

    c=15

    after applying the measures to the Pythagoras theorem formula,

    we found out that the length of the straight-edge needs to be 15 inches
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