Express the product as a sum or difference.sin 4x sin 6x
A. sin2 24x2
B. 
(cos 2x - cos 10x)
C. 
(- cos 2x - cos 10x)
D. 
(cos 10x - sin 2x)
Answer: B
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?Which of the following is true about Similar Triangles?
A. ?If side a = 70", angle C = 55?, side b' = 80", then angle C' is 75?. B. ?If side a = 70", angle C = 55?, side b' = 80", then angle C' is 55?. C. ?If side a = 70", angle C = 55?, side b' = 80", then the triangles are not necessarily similar. D. ?If side a = 70", angle C = 55?, side b' = 80", then the triangles are similar. E. ?If side a = 70", angle C = 55?, angle B = 70?, then side A is the smallest side.
Solve the problem.An organization helping to provide meals to city shelters for the homeless has a membership of 60 volunteers. They are assigned among the four city areas A, B, C, and D in proportion to the number of people fed in the respective areas. The numbers of people fed at the city shelters in each city area are shown in the following table. 
Use Jefferson's method to extend the table and apportion the 60 volunteers among the city areas. 
A. 
B. 
C. 
D. 
Solve using the percentage formula.187 is 34% of what number?
A. 5,500 B. 0.18 C. 18 D. 550
Solve the equation.4(5 - 3x) = 
A. 
B. {3}
C. {-3}
D. {128}