Divide and express the result in standard form.
A. 
- 
i
B. 
- 
i
C. 
+ 
i
D. 
+ 
i
Answer: A
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Solve the problem.Consider the area of the region in the first quadrant enclosed by the curve y = 
cosh 8x, the coordinate axes, and the line x = 10. This area is the same as the area of a rectangle of a length s, where s is the length of the curve from 
to 
What is the height of the rectangle?
A. 
B. 8
C. sinh 80
D. 
sinh 80
Solve the problem.Using the numerals 0 through 9, how many 6-digit serial numbers can be made if the first digit must be 0 or 1 and numerals may be repeated?
A. 200,000 B. 100 C. 1,000,000 D. 118,098
Use similar triangles and the fact that corresponding sides are proportional to find the length of the side marked with an x.
A. 39 in. B. 156 in. C. 4.3 in. D. 0.9 in.
Determine whether the given lines are parallel, perpendicular, or neither. 3x - 8y = -732x + 12y = -4
A. Perpendicular B. Neither C. Parallel