Multiply the conjugates.(2 + 3i)(2 - 3i)
A. 4 - 9i
B. 4 + 9i
C. -5
D. 13
Answer: D
Mathematics
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Use dimensional analysis to convert the unit indicated.110 in. to hm
A. 43.31 hm B. 2,794,000 hm C. 0.02794 hm D. 0.43 hm
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Evaluate.
A. 0 B. 1 C. 10 D. 3,628,800
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Find the sum.
A. -2352 B. -2520 C. -2640 D. -2688
Mathematics
Solve the problem.A room in the shape of a triangle has sides of length 8 yd, 10 yd, and 15 yd. If carpeting costs $17.50 a square yard and padding costs $4.25 a square yard, how much to the nearest dollar will it cost to carpet the room, assuming that there is no waste?
A. $777 B. $786 C. $647 D. $804
Mathematics