Perform the indicated operations and write the result in standard form.
A. 6 + i
B. -6 + i
C. -6 + i
D. -6 - i
Answer: B
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Let a and b be positive numbers. Determine whether the statement is true or false.(-a)(-b) is a positive number.
A. True B. False
Solve.From a 24-inch by 24-inch piece of metal, squares are cut out of the four corners so that the sides can then be folded up to make a box. Let x represent the length of the sides of the squares, in inches, that are cut out. Express the volume of the box as a function of x. Graph the function and from the graph determine the value of x, to the nearest tenth of an inch, that will yield the maximum volume.
A. 3.7 inches B. 4.1 inches C. 3.8 inches D. 4.0 inches
Use the information given about the angle ?, to find the exact value of the indicated trigonometric function.cos ? = - 
, ? in quadrant II Find sin 2?.
A. - 
B. 
C. - 
D. 
Evaluate the expression.
A. 3.4 B. 0.4 C. 40.0 D. 4.0 E. 14.3