Solve the problem.Determine whether the ordered triple (2, 9, -4) is a solution of the system of equations.2x - 5y - 9z = -5 x + y + z = 73x - y + 5z = 35
A. Yes
B. No
Answer: B
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Find at least three nonzero terms [including a0, at least two cosine terms (if they are not all zero) and at least two sine terms (if they are not all zero)] of the Fourier series for the given function.f(x) = 
A. f(x) = -1 + 
B. f(x) = -1 + 
C. f(x) = -3 + 
D. f(x) = -3 + 
Write a statement that represents the relationship between the following.A = {b, f, n, t, e, r} and r
A. r ? A B. r ? A C. r ? A D. r = A
Convert the angle into degree, minute, second form. Round the answer to the nearest second.26.31°
A. 26°18'24'' B. 26°18'31'' C. 26°18'42'' D. 26°18'36''
Solve. Write a mixed numeral for the answer.Brian was training to run a marathon. During the three-day period before the race he decided that he would train for a total of 11 hours. If he trained for 1
hours on the first day and 3
hours on the second day, how many hours would he need to train on the third day?
A. 6
hr
B. 6
hr
C. 6
hr
D. 7
hr