Find the exact value of the expression. Do not use a calculator.1 - sin2 30° - sin2 60°
A. 1
B. 
C. 0
D. 
Answer: C
Mathematics
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Find the slope of the line containing the given points. Simplify if possible.
A. 
B. 
C. - 
D. - 
Mathematics
Express the number in scientific notation.0.0000004
A. 4 × 10-6 B. 4 × 10-8 C. 4 × 10-7 D. 4 × 10-9
Mathematics
Find the average.Ages of patients (in years) in a clinic: 19, 4, 29, 19 (Round to the nearest whole number)
A. 17 years B. 19 years C. 18 years D. 4 years
Mathematics
Find an equation of the tangent line to the graph of the function at the point 
.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics