A cruise ship travels from Port Cassett North at speed of 34 km/h for 2.5 hours. Then it turns 90° and travels west at 30 km/h f
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The answer to the question is a
Substitute 136.5 for y.
Compare this equation with
a = 1, b = - 191, c = 8190
or
or
or
or
or
or
x = 126 or x = 65
Hence, the points on the curve are (65, 136.5) and (126, 136.5).
The width of the air space is the distance between these points.
Width =
=
= 126 - 65
= 61
Hence, width of the air space is 61m.