Find the exact value of the expression.cos 40° cos 20° - sin 40° sin 20°
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Solve the problem.Consider an election in which the votes were cast as follows. How many of Quincy's votes would Plaxton need to win the runoff election?
A. 166 B. 152 C. 28 D. 139
Mathematics
Solve the problem.The area of a regular hexagon is A(s) = 
, where s is the length of a side of the hexagon. Find 
A. 0.0600 cm2 B. 3.12 cm2 C. 1.04 cm2 D. 0.104 cm2
Mathematics
Find the volume of the circular cone. Use 3.14 or 
for ? as indicated and round as indicated. Use 3.14 for ?. Round to the nearest hundredth.
A. 123.41 mm3 B. 123.53 mm3 C. 370.24 mm3 D. 41.18 mm3
Mathematics
Use I = Prt for simple interest to find the indicated quantity.I = $750; r = 6%; t = 6 months. Find P.
A. $25,750 B. $24,250 C. $22.50 D. $25,000
Mathematics