Use the trapezoidal rule to approximate the value of the integral defined by the given set of points.
A. 17.08
B. 18.95
C. 22.46
D. 25.3
Answer: A
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Prove that the equation is an identity.2 sin(x + y) cos(x - y) = sin 2x + sin 2y
What will be an ideal response?
Provide an appropriate response.
A conduit ABCD must be made so that ?CBE is 45°. If BE = 5 cm and AK = 16 cm, find the length of the conduit to the nearest thousandth of a centimeter. 
A. 18.071 cm B. 23.071 cm C. 14.536 cm D. 19.660 cm
Determine whether the graph is that of a function. If it is, use the graph to find its domain and range, the intercepts, if any, and any symmetry with respect to the x-axis, the y-axis, or the origin.
A. function domain: all real numbers range: {y|y = 2 or y = -6} intercept: (0, -6) symmetry: none B. function domain: all real numbers range: all real numbers intercept: (0, -6) symmetry: none C. function domain: {x|x = 2 or x = -6} range: all real numbers intercept: (-6, 0) symmetry: x-axis D. not a function
Without solving the equation, find the value(s) of the variable that could result in an extraneous solution.
- 
= 
A. -1, 0, 3, 9 B. -9, -3, 1 C. -9, -3 D. -1, 3, 9