Find the exact value by using a half-angle identity.sin 22.5°
A. 
B. - 
C. 
D. - 
Answer: C
Mathematics
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Perform the indicated operation.40 - 0.0972 + (-0.5)
A. 40.0028 B. 39.9028 C. 39.4028 D. 40.0972
Mathematics
Round each number to the nearest hundred to estimate the sum or difference.9558 + 8858
A. 18,400 B. 18,000 C. 18,416 D. 18,500
Mathematics
Match the function with the graph that best describes the situation.The amount of rainfall as a function of time, if the rain fell more and more softly.
A. 
B. 
C. 
D. 
Mathematics
Find the resultant (sum) of the complex numbers. Express in rectangular form 
-5 + 12i, 3
A. -2 + 15i B. -8 + 15i C. -2 + 12i D. -8 + 12i
Mathematics