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stich3 [128]
2 years ago
14

Find BC if B (8,-7) and C (-4,-2)

Mathematics
1 answer:
viktelen [127]2 years ago
5 0
BC = 15
good luck :))
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GaryK [48]

Answer:

Distance between A and B is 5400 meters

Step-by-step explanation:

Consider "D" the letter to identify distance between A and B

Let's use "t" to identify the time of the first encounter (Devi and Kumar), and create an equation that states that the distance covered by Devi (at 100 m/min) in time "t", is equal to the total distance D minus what Kumar has covered at his speed (80 m/min) in that same time:

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distance= speed * time

First encounter:

100 * t = D - 80 * t

180 * t = D    Equation (1)

Not, 6 minutes later (at time t+6) , Devi and Li Ting meet .

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100 t + 600 = D - 75 t - 450

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Now, let's equal equation (1) to equation (2), since D should be the same:

180 t = 175 t + 150

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Answer:

Step-by-step explanation:

first it is about to delete your question and A. is 46 B. is 37

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