Evaluate.2 cot2 270° + 2 sec2 0° - csc2 225°
A. 
B. 
C. 0
D. 4
Answer: C
Mathematics
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Solve the equation by using the quadratic formula. Give only real number solutions.3x2 + 12x = - 2
A. 
B. 
C. 
D. 
Mathematics
Decide if the number is rational or irrational.0.41414141...
A. Rational B. Irrational
Mathematics
Use an Euler diagram to determine whether the argument is valid or invalid.Not all that glitters is gold.My ring glitters. My ring is not gold.
A. Valid B. Invalid
Mathematics
Use Newton's method to find an approximate answer to the question. Round to six decimal places.Where is the first local maximum of f(x) = 2x sin x on the interval (0, ?) located?
A. x ? 2.000000 B. x ? 2.028647 C. x ? 2.039758 D. x ? 2.028758
Mathematics