Simplify.sin(4x + 7y) - sin(4x - 7y)
A. 2 sin 7y cos 4x
B. sin 14y cos 4x
C. 2 sin 4x cos 7y
D. 2 sin 4x cos 7x
Answer: A
Mathematics
You might also like to view...
Multiply.(3r + 2)(3r3 + 4r2 + 2r - 3)
A. 9r4 + 18r3 + 10r2 - 5r - 6 B. 9r4 + 20r3 + 14r2 - 5r - 6 C. 9r4 + 18r3 + 14r2 - 5r - 6 D. 9r4 + 18r3 + 14r2 - 9r - 6
Mathematics
Find the standard form of the equation of the parabola with the given characteristic and vertex at the origin.
?
Horizontal axis and passes through the point 
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Solve, rewrite in interval notation, and graph.5x + 16 ? -25 or 5x + 16 ? 25
A. 
? 
B. (-?, ?)
C. (-?, -9] ? [1, ?)
D. 
Mathematics
Evaluate the expression. Round your result to two decimal places.
?
?
A. 1.87 B. -2.13 C. -1.13 D. 0.87 E. -0.13
Mathematics