Use the Pythagorean Theorem to solve Exercises.
Towns A and B are located 6 miles and 3 miles, respectively, from a major expressway. The point on the expressway closest to town A is 12 miles from the point on the expressway closest to town B. Two new roads are to be built from A to the expressway and then to B
a. Express the combined lengths of the new roads in terms of x as shown in the figure.
b. If the combined length of the new roads is 15 miles, what distance does x represent?
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