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goldfiish [28.3K]
3 years ago
5

Two ships have a harbor entrance at the same time. The first ship is traveling at a constant 16 mph, while the second is traveli

ng at a constant 20 mph. If the angle between the course is 169°, how far apart are they after 2 hours? (Round answer to nearest whole number.)

Mathematics
1 answer:
stepan [7]3 years ago
5 0
So hmm check the picture below

both ships leave at the same time, one is going 16mph, the other 20mph, 2hrs later on the road

at 16mph well, 2hrs is just 16+16, or 32 miles away
20mph for 2hrs, is 20+20, or 40 miles away

using the law of cosines  \bf x = \sqrt{{{ 32}}^2+{{ 40}}^2-2(32)(40)cos(169^o)}

again, recall, the angle is in degrees, so, when taking the cosine, make sure your calculator is in Degree mode

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32 / 4 = 8

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32 and 4 are corresponding, and 40 and x are as well. Find the relation between 32 and 4, then apply it to 40 to find the value of x.

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Neil's Ice Creamery sold 50 sundaes last week. There were nuts on 22 of the sundaes. What is the ratio of the number of sundaes
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