Complete the identity.sec (? + ?) sec (? - ?) = ?
A. 
B. 
C. 
D. sec2? - sec2 ?
Answer: C
Mathematics
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Find the amount of the sale before sales tax was added. Round to the nearest cent.Total Sale: $2440.77Sales Tax Rate: 4%
A. $2324.54 B. $2346.89 C. $2369.68 D. $1743.41
Mathematics
Approximate f(x) to four decimal places.f(x) = 3
, x = -1.7
A. 1.3653 B. 2.9053 C. -0.4551 D. -1.3653
Mathematics
Suppose the triangles shown are similar, with angle A = angle D, angle B = angle E, and angle C = angle F. Answer the question.
What is the value of x?
A. 17
B. 34
C. 
D. 
Mathematics
Find an equation of variation in which the following are true.y varies directly as x and inversely as z, and y = 6 when x = 2 and z = 7.
A. y = 24xz
B. y = 
C. y = 
D. y = 
Mathematics