Answer:
59°
Step-by-step explanation:
From the diagram, shown in the attachment line x and y are parallel lines.
Angle 7 and angle 6 are angles on a straight line.
The two angles will add up to 180 degrees.

But angle 7 measures 121°.
This implies that:

Solve for angle 6 to get;
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What exactly are you trying to find but I tried to do the problem and I got 3
Answer:2 meters per second.
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Step-by-step explanation: For every 1 second, she swims another 2 meters.