Find an equivalent expression.cos 
A. -tan x
B. -sin x
C. sin x
D. -cos x
Answer: B
Mathematics
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Provide an appropriate response.Factor completely: 8x2 - 10x + 3
Fill in the blank(s) with the appropriate word(s).
Mathematics
Provide an appropriate response. Use the cosine function to find c of a standard right triangle ABC given A = 23° and b = 0.2372 mm. Round to four significant digits.
A. 0.6071 mm B. 3.881 mm C. 0.2577 mm D. 0.2183 mm
Mathematics
Factor completely. If the polynomial cannot be factored, write "prime."125a3 - 8b3
A. (5a - 2b)(25a2 + 10ab + 4b2) B. (5a - 2b)(25a2 + 4b2) C. (5a + 2b2)(25a2 - 10ab + 4b2) D. (125a - 2b)(a2 + 10ab + 4b2)
Mathematics
Verify that the matrix is invertible and find its inverse.A = 
A. A-1 = 
B. A-1 = 
C. A-1 = 
D. A-1 does not exist.
Mathematics