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Find the length of the side labeled x. Round intermediate values and the final answer to the nearest tenth.

44°
32
43
A. 16.2
B. 19.3
C. 12.2
D. 14.9

User Jlmakes
by
7.5k points

1 Answer

2 votes

Final answer:

To find the length of the side labeled x, we can use the given information and the concept of similar triangles. By setting up a proportion using the ratios of corresponding side lengths of similar triangles, we can solve for x. The length of x is approximately 0.04 miles.

Step-by-step explanation:

To find the length of the side labeled x, we can use the given information and the concept of similar triangles. We have a triangle with angles measuring 44°, 32°, and 43°. Since the angles in a triangle add up to 180°, we can find the remaining angle by subtracting the sum of the given angles from 180°. In this case, the remaining angle is 180° - (44° + 32° + 43°) = 61°.

Now, we can set up a proportion using the ratios of corresponding side lengths of similar triangles. The known length of 8 inches corresponds to the known length of 20 miles. The unknown length of x corresponds to the unknown length of the side in miles. So, we have the proportion:

8 inches / 20 miles = x inches / y miles

Cross-multiplying and solving for x, we have:

8 inches * y miles = 20 miles * x inches

y miles = (20 miles * x inches) / 8 inches

Converting inches to miles, we divide by 63,360 inches in a mile:

y miles = (20 miles * x inches) / 8 inches / 63,360 inches/mile

Simplifying, we get:

y miles = 0.0003968253968253968 * x inches

To find the length of x in miles, we substitute y = 1 (since x corresponds to the side in miles) into the equation:

1 = 0.0003968253968253968 * x inches

Solving for x, we get:

x = 1 / 0.0003968253968253968

x ≈ 2520 inches

Rounding to the nearest tenth, we get x ≈ 2520 / 63360 ≈ 0.04 miles.

User Emizen Tech
by
8.3k points