Express the product as a sum or difference.sin 4x cos 5x
A. 
(sin 9x - sin x)
B. 
(cos 9x + sin x)
C. sin (cos 20x2)
D. 
(cos 9x - cos x)
Answer: A
Mathematics
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Find area of figure. Round to the nearest hundredth if necessary.
A. 624 in.2 B. 2496 in.2 C. 1248 in.2 D. 1152 in.2
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Provide an appropriate response.Find a 3 × 2 matrix 
with a11 = a22 = 0, all other aij equal to 1.
What will be an ideal response?
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Completely factor the polynomial or state that the polynomial is prime.125x3 + 1
A. (5x + 1)(25x2 + 5x + 1) B. (5x + 1)(25x2 - 5x - 1) C. (5x + 1)(25x2 - 5x + 1) D. (5x + 1)(25x2 + 1)
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Evaluate the piecewise function at the given value of the independent variable.g(x) =
; g(5)
A. 
B. 5
C. 7
D. - 
Mathematics