Solve the problem.The windchill temperature was -
, and the actual temperature was 
Find the difference between the actual temperature and the windchill temperature.
A. 17°
B. 9°
C. 19°
D. 34°
Answer: A
Mathematics
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Write the complex number in polar form. Express the argument ? in degrees, with 0 ? ? ? 360°.-4
A. 4(cos 270° + i sin 270°) B. 4(cos 180° + i sin 180°) C. 4(cos 0° + i sin 0°) D. 4(cos 90° + i sin 90°)
Mathematics
Solve the equation.
+ 
= 1
A. 5
B. 7
C. 15
D. 
Mathematics
Decide whether the expression is or is not an identity.
2 = 1 - sin x
A. Identity B. Not an identity
Mathematics
Find the value for the function.Find f(-x) when f(x) = 2x2 + 5x - 3.
A. -2x2 - 5x + 3 B. -2x2 - 5x - 3 C. 2x2 - 5x + 3 D. 2x2 - 5x - 3
Mathematics