Solve the problem.In general, cos 2? ? 2 cos ?. Determine graphically whether there are any values of ? on 
for which 
If there are any such values, estimate them from your graph and refine your estimate numerically to the nearest tenth of a degree.
A. 90.0° and 270.0°
B. None
C. 111.5° and 248.5°
D. 109.5° and 246.5°
Answer: C
Mathematics
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Solve the equation.-8.8q = -87.6 - 1.5q
A. 10.0 B. 10.1 C. 12 D. -95
Mathematics
Is the following correspondence a function?
A. Yes B. No
Mathematics
Select the correct graph of the inequality.
?
?
A. ?
B. ?
C. ?
D. 
E. ?
Mathematics
Solve the problem.Determine if a right triangle can have the following sides where a and b represent the legs and c represents the hypotenuse.a = 16, b = 20, c = 24
A. yes B. no
Mathematics