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yaroslaw [1]
3 years ago
9

What are the ordered pairs?

Mathematics
1 answer:
Sveta_85 [38]3 years ago
8 0

i cant see the lines clearly, soo all i can say is that:

- x is the horizontal line, y  is vertical

- quadrant I all positive

- quadrant II x negative, y positive

- quadrant III all negative

- quadrant IIII y positive, y negative

- for every line the point passes, it counts as 1

- each point does not have a certain order to go in the chart

sorry, but this is the best i can do for now! make sure your pictures are clear next time :D

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Flying against the wind, an airplane travels 4200 km in 7 hours. Flying with the wind, the same plane travels 4000 km in 4 hours. What is the rate of the plane in still air and what is the rate of the wind?

Answer · 1 vote

Let Va = the velocity of the airplane Let Vw = the velocity of the wind When flying with the wind: (Va+Vw)*(4 hours) = 4000 4Va + 4Vw = 4000 4Vw = 4000 - 4Va Vw = 1000 - Va When flying against the wind: (Va-Vw)*(7 hours) = 4200 km7Va - 7Vw = 4200 Substitute 1000-Va for Vw and solve for Va: 7Va - 7(1000-Va) = 4200 7Va -7000 + 7Va = 4200 14Va = 11200 Va = 800 km/hr Rate of wind: Vw = 1000 - Va = 1000 - 800 = 200 km/hour

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Step-by-step explanation:

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Please help!!!!!!!!!
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