An athlete is tracking his weight
2 answers:
Answer:
He loses 7 pounds per week
Step-by-step explanation:
After 3 weeks he weighs 188 pounds.
After 6 weeks he weighs 167 pounds.
Weight loss = (188 - 167) pounds = 21 pounds
Time interval = 6 weeks - 3 weeks = 3 weeks
Rate of change = Weight loss ÷ time interval = pounds per week = 7 pounds loss per week.
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<h3>Answer: 
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Explanation:
The identity we'll use is cos(-x) = cos(x) for any value of x.
So cos(-150) = cos(150).
Then locate the angle 150 on the unit circle. The terminal point is
The x coordinate of this terminal point is the value of cos(150).