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Sagot :
The combined speed of the plane and the wind is 249.35 km/h.
Relative speed
The relative speed of the plane due to speed of the wind is calculated as follows;
Let the direction of the plane be horizontal direction.
Speed of the wind
The speed of the wind is calculated as follows;
[tex]V_b = V \times cos\theta\\\\V_b = 75 \times cos(70)\\\\V_b = 25.65 \ km/hr[/tex]
Combined speed
The combined speed of the plane and the wind is calculated as follows;
V = 275 km/h - 25.65 km/h
V = 249.35 km/h
Thus, the combined speed of the plane and the wind is 249.35 km/h.
Learn more about relative speed here: https://brainly.com/question/17228388
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