Save Homework: Section 4.3

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4.3.5

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A plane traveled 5780 miles with the wind in 8.5 hours and 4590 miles against the wind in the same amount of time. Find the speed

of the plane in still air and the speed of the wind

V (Simplify your answer.)

The speed of the plane in still air is

To se

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12:09 PM

10/8/2020

no

step-by-step explanation:

2-7=-5

7-2=5

when you combing like terms for ech expression, 5 and -5. these numbers are not equal to each other.

answer: can you give the

step-by-step explanation:

7.9m and 4.3°

step-by-step explanation:

let east be +x and north be +y, x = distance * cos θ, y = distance * sin θ  

for 3.5 south, y = -3.5  

for 8.2, x = 8.2 * cos 30 and y = 8.2 * sin 30  

for 15 west, x = -15  

total x = 8.2 * cos 30 – 15 ≈ -7.9  

total y = -3.5 + 8.2 * sin 30 = 0.6  

magnitude = [(8.2 * cos 30 – 15)^2 + 0.6^2)]^0.5  

the magnitude is approximately 7.9 m  

tan θ = y/x = 0.6/-7.9  

the angle is approximately 4.3˚ north of west

he has 140 chickens because he has 10 times more chickens than ducks and he has 14 ducks so 14*10=140