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2 years ago

6

The distance between boston and chicago on a map is 9 inches. If the scale of the map is 1 inch : 95 miles, what is the actual d

istance from boston to chicago

1 answer:

meriva2 years ago

8 0

95 x 9 = 855 miles from Boston to chicago answer is 855.

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kipiarov [429]

Answer:

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Step-by-step explanation:

Let $BN=x$

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$\dfrac{BC}{AB}=\dfrac{AB}{BN}\\\Rightarrow \dfrac{c}{a}=\dfrac{a}{x}\\\Rightarrow c=\dfrac{a^2}{x}\\\Rightarrow x+1=\dfrac{a^2}{x}\\\Rightarrow x^2+x=20\\\Rightarrow x^2+x-20=0\\\Rightarrow x=\frac{-1\pm \sqrt{1^2-4\times 1\times \left(-20\right)}}{2\times 1}\\\Rightarrow x=4,-5$

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$h=\sqrt{a^2-x^2}\\\Rightarrow h=\sqrt{(2\sqrt{5})^2-4^2}\\\Rightarrow h=2\ \text{in}$

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Answer:

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Step-by-step explanation:

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so the answer is : binomial with a degree of 3

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