Show that the equation is not an identity by finding a value of x for which both sides are defined but not equal.sin (x + ?) = sin x
A. 0
B. 
C. 2?
D. ?
Answer: B
Mathematics
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Sketch the level curve z = k for the indicated values of k.z = 
, k = -4, -1, 0, 1, 4
A. 
B. 
C. 
D. 
Mathematics
Evaluate. Assume that all variables represent positive numbers. |-21|
A. 0 B. 42 C. 21 D. -21
Mathematics
Solve the problem.A drill press cost $5,000 and has an estimated life of 8 years and a scrap value of $300. Find the book value at the end of 6 years using the straight-line method. Round to nearest dollar.
A. $1,475 B. $3,525 C. $1,250 D. $4,413
Mathematics
Solve the equation.y1/2 - 13y1/4 + 30 = 0
A. {10,000, 81} B. {10, 3} C. {-10, -3} D. {100, 9}
Mathematics