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OLEGan [10]
4 years ago
6

Which equation represent a line that passes through (-2,4) and has a slope of 2/5

Mathematics
1 answer:
Mila [183]4 years ago
4 0
Equation of a line is given by y - y1 = m(x - x1); where m is the slope.
y - 4 = 2/5 (x - (-2))
y - 4 = 2/5 (x + 2)
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Question Help
lorasvet [3.4K]

Answer:

The speed of the boat is 20 km/hr

Step-by-step explanation:

Let s be the speed of boat in still water

Let d be the distance

Upstream speed = s-4

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So, Distance traveled in upstream =Speed \times time =(s-4) \times \frac{30}{60}

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So, (s-4) \times \frac{30}{60}=(s+4) \times \frac{20}{60}

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Hence The speed of the boat is 20 km/hr

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