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ipn [44]
2 years ago
11

B is the midpoint of segment AC; AB = 8v, and AC = 2v + 42. What is BC?

Mathematics
2 answers:
Alona [7]2 years ago
7 0
2 * AB = AC  
2 * 8v = 2v + 42
16v - 2v = 42
14v = 42
v = 42/14
v = 3

BC = AB = 8v = 8*3 = 24
KonstantinChe [14]2 years ago
7 0
I believe it's 24 after solving.
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A town map has a scale of 2cm:0.5km what is the actual distance for a walk measured at 9cm on the map?
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Tony took a city bus from his dorm to the school library, and then to a gym for a workout
Feliz [49]

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27 miles.

Step-by-step explanation:

Here I attach the draw of the coordinates.

Tony traveled 3 segments. The first was from (12,6) to (12, 15), where, leting 12 constant, he moved from 6 to 15 in the ordinates axis, which implies 9 units. This is the section 1 in the draw.

Then he moved from point B to C. If you notice, this distance is the hypotenuse on the the triangle DBC. We can find this value using Pitagoras' theorem:

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He traveled in total 27 miles!!

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