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Naddik [55]
2 years ago
12

URGENTTTT PLS PLS PLS PIFHCHIDFCHI. How do you write 5x^2-14-3x2 in standard form?

Mathematics
1 answer:
Amanda [17]2 years ago
8 0
5x^2-3x^2= 2x^2

2x^2-14

2(x^2-7)
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An airplane travels 5040 kilometers against the wind in 9 hours and 6660 kilometers with the wind in the same amount of time. Wh
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Wyzant

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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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Socratic

Question

Flying against the wind, an airplane travels 4500 in 5 hours. Flying with the wind, the same plane travels 4640 in 4 hours. What is the rate of the plane in still air and what is the rate of the wind?

Answer · 0 votes

The speed of plane in still air is 1030 km/hr and wind

Step-by-step explanation:

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2 years ago
Juan spent $7.00 of the $20.00 in his wallet. Which decimal represents the fraction of the $20.00 Juan spend?
swat32

Answer:

Juan still has $13.00 left after spending $7.00 as a percentage that is 35% and as a fraction that is 35/100 or 0.35.

Step-by-step explanation:

I hope I helped in any way.

5 0
3 years ago
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2 years ago
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Finger [1]

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= 5.65


I hope that's help ! If you have question(s) please let me know


4 0
3 years ago
Read 2 more answers
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