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

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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