Question 245193
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Let *[tex \Large x] represent the scale factor.  Then we know that the dimensions of Y are *[tex \Large x] times the dimensions of X, so knowing that the area of Y is the length of Y times the width of Y, we can write:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 7x\,\cdot\,5x\ =\ 140]


Just solve for *[tex \Large x].  Discard the negative root of the equation because a negative scale factor does not make any sense in this context.



John
*[tex \LARGE e^{i\pi} + 1 = 0]
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