Evaluate without using a calculator by using ratios in a reference triangle.cot 45°
A. 
B. 
C. 
D. 1
Answer: D
Mathematics
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Find the effective annual interest rate for the given nominal annual interest rate. Round your answers to the nearest 0.01%.4% compounded semiannually
A. 4.06% B. 4.07% C. 4.04% D. 4.00%
Mathematics
Factor the sum of cubes.27a6 + b3a3
A. (3a2 + ba)(9a4 - 3ba3 + b2a2) B. a3(3 + ab)(9 - 3ab + b2a2) C. a3(3a - b)(9a2 + 3ab + b2) D. a3(3a + b)(9a2 - 3ab + b2)
Mathematics
Use the given information about the polynomial function f(x) to write its complete factored form.Degree 3; zeros: 
, 4, -1; leading coefficient = 1
A. f(x) = 
(x - 4)(x - 1)
B. f(x) = 
(x + 4)(x - 1)
C. f(x) = 
(x + 4)(x + 1)
D. f(x) = 
(x - 4)(x + 1)
Mathematics
Provide an appropriate response.If f(x) = 
, find f''(x).
What will be an ideal response?
Mathematics