Use the Half-angle Formulas to find the exact value of the trigonometric function. sin 22.5°
A. - 
B. 
C. - 
D. 
Answer: D
Mathematics
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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
Solve the problem.A recipe calls for 1
cups of water. How much water would be needed for 
the recipe?
A. 1
cup
B. 
cups
C. 
cup
D. 
cup
Mathematics
Round to the indicated place.The Great Pyramid of Khufu in Egypt is 137.03 meters tall. Round this measurement to the nearest tenth of a meter.
A. 137.03 m B. 137 m C. 137.0 m D. 136.9 m
Mathematics
Find the point on the given plane closest to 
.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics