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3 years ago

5

the lenght of the actual tunnel is 21 miles. The scale is 1 in. to 6 miles (1 inch represents 6 miles), what is the length of th

e tunnel on the map?

1 answer:

mr Goodwill [35]3 years ago

5 0

Answer:

3.5 in

Step-by-step explanation:

1in=6Miles

21=Miles

1in=6

1in=12

1in=18

.5in=3

____________

3.5IN = 21MILES

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<u>Solution:</u>

Need to solve given equation using quadratic formula.

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And quadratic formula for getting roots of quadratic equation is

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In our case b = -1 , a = -3 and c = -3

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$\begin{array}{l}{x=\frac{-(-1) \pm \sqrt{(-1)^{2}-4(-3)(-3)}}{2 \times-3}} \\\\ {x=-\frac{1}{6} \pm\left(-\frac{\sqrt{-35}}{6}\right)}\end{array}$

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