Use the Half-angle Formulas to find the exact value of the trigonometric function. cos 22.5°
A. 
B. - 
C. - 
D. 
Answer: A
Mathematics
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Determine whether the ordered pair is a solution to the inequality.5x + 3y < 19; (2, 3)
A. Yes B. No
Mathematics
Write a word description of the set.{March, May}
A. the set of months in the year B. the set of months that begin with M C. the set of months in the Spring D. the set of months that are warm
Mathematics
Evaluate the function.If f(x) = -3x2 - 2x + 5, find f(3).
A. -24 B. -10 C. -28 D. -33
Mathematics
Rank the data from lowest to highest and determine the requested quartile.The following scores on the midterm exam in a math class were recorded.
Find the 3rd quartile, Q3.
A. 77 B. 89 C. 85 D. 87
Mathematics