Solve the problem.The sound produced by touching each button on a touch-tone phone is described by y = sin 2?lt + sin 2?htwhere l and h are the low and high frequencies (cycles per second) in the figure shown.
Use a calculator to find the graph of the sound emitted by touching the 6 key in a [0, 0.01, 0.001] by [-2, 2, 1] viewing rectangle.
A. 
B. 
C. 
D. 
Answer: D
You might also like to view...
Evaluate.C(10, 0)
A. 907,200 B. 3,628,800 C. 1 D. 1,814,400
Sketch the graph of the quadratic function. Identify the vertex and axis of symmetry.f(x) = (x + 1)2 - 9
A. vertex: (1, - 9)
axis of symmetry: x = 1
B. vertex: (- 1, - 9)
axis of symmetry: x = - 1
C. vertex: (- 1, - 9)
axis of symmetry: x = - 1
D. vertex: (1, - 9)
axis of symmetry: x = 1
Solve the problem.A textile company has specific dyeing and drying times for its different cloths. A roll of Cloth A requires 55 minutes of dyeing time and 45 minutes of drying time. A roll of Cloth B requires 60 minutes of dyeing time and 25 minutes of drying time. The production division allocates 2080 minutes of dyeing time and 1220 minutes of drying time for the week. How many rolls of each cloth can be dyed and dried?
A. 2 rolls of Cloth A, 44 rolls of Cloth B B. 5 rolls of Cloth A, 32 rolls of Cloth B C. 13 rolls of Cloth A, 35 rolls of Cloth B D. 16 rolls of Cloth A, 20 rolls of Cloth B
Find a mathematical model representing the statement. (Determine the constant of proportionality.)
?
z varies jointly as x and y. 
?
A. 
B. 
C. 
D. 
E. 