Solve the equation in the interval [0, 2?). Express solutions as approximations to the nearest hundredth.2 sec2x - 2 sec x - 1 = 0
A. {2.39, 4.79}
B. {0.75, 5.53}
C. {0.75, 2.39, 4.79, 5.53}
D. {0.75, 2.39}
Answer: B
Mathematics
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Find the exact value of the expression.sin 185° cos 65° - cos 185° sin 65°
A. 
B. - 
C. - 
D. 
Mathematics
Graph the hyperbola.(x - 2)2 - 9(y - 2)2 = 9
A. 
B. 
C. 
D. 
Mathematics
Solve.s2 - 3s - 18 < 0
A. (6, ?), or {s
s > 6}
B. (-?, -3), or {s
s < -3}
C. (-3, 6), or {s
-3 < s < 6}
D. (-?, -3) ? (6, ?), or {s
s < -3 or s > 6}
Mathematics
Suppose that y is directly proportional to x. Use the given information to find the constant of proportionality k. Then use y = kx to find y for the given value of x.y = 7.5 when x = 15;
Find y given x = 6.
A. k = 0.5; y = 3
B. k = 112.5; y = 
C. k = 1.5; y = 2.4
D. k = 0.5; y = 2.4
Mathematics