1.) 25% of a number is less than 18% of 650 by 19. what is the number? 2.) If the bases of two similar triangles are in the ratio of 2:3, then is what ratio are their ares?
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Originally Posted by Mr.Green 1.) 25% of a number is less than 18% of 650 by 19. what is the number? 2.) If the bases of two similar triangles are in the ratio of 2:3, then is what ratio are their ares? 1) .25x + 19 = .18(650) 2) If two similar triangles have a scale factor of $\displaystyle \frac{a}{b}$, then the ratio of their areas is $\displaystyle \frac{a^2}{b^2}$. $\displaystyle \frac{A_1}{A_2}=\frac{2^2}{3^2}=\frac{4}{9}$
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