Show that the function is a solution of the wave equation.w(x, t) = cos (9ct) sin (9x)
A. Yes
B. No
Answer: A
Mathematics
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Solve the equation.
- 4 = 1
A. 15 B. 20 C. -15 D. -20
Mathematics
Simplify by finding the absolute value.?-17?
A. 17 B. 34 C. -17 D. 0
Mathematics
Solve the system by graphing. If there isn't a unique solution to the system, state the reason. 5x + y = -22 5x + 6y = -7
A. (-5, -6) B. (5, 3) C. (-4, -2) D. (-5, 3)
Mathematics
Provide an appropriate response.Which of the following is the correct way to evaluate the expression 
?
A. 3 + 6 ? 5 = 3 + 30 = 33 B. 3 + 6 ? 5 = 30 + 6 = 36 C. 3 + 6 ? 5 = 15 + 30 = 45 D. 3 + 6 ? 5 = 9 ? 5 = 45
Mathematics