Determine whether the function is a solution of the wave equation.w(x, t) = e5ct cos 5x
A. Yes
B. No
Answer: B
Mathematics
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Give the symbol that represents the portion of the line named and draw a figure showing just the portion named.
Ray QS
A. 
B. 
C. 
D. 
Mathematics
Decide if the function is linear.y = 4x + 9
A. Yes B. No
Mathematics
Determine if the equation x² + y² = 49 defines y as a function of x.
(a) The equation represents a function because it’s a circle. (b) The equation represents a function because for each value of x there is always two values of y. (c) Not a function because the equation gives two values of y for a given value of x. (d) The equation represents a function because it passes the vertical line test. (e) Not a function because the equation passes the vertical line test.
Mathematics
Find the product.9(4)
A. 27 B. 26 C. 360 D. 36
Mathematics