Solve. Clear decimals first.2x + 1.9 = -1.5 + 3.7x
A. 1.5
B. 0.9
C. -5
D. 2
Answer: D
Mathematics
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Find z1z2. Write the answer in polar form with the argument between 0° and 360°.z1 = 10(cos 30° + i sin 30°), z2 = 5(cos 10° + i sin 10°)
A. 50(cos 300° + i sin 300°) B. 15(cos 300° + i sin 300°) C. 50(cos 40° + i sin 40°) D. 15(cos 40° + i sin 40°)
Mathematics
Find the area of the specified region.Inside the lemniscate r2 = a2 sin 2?, a > 0
A. 0
B. a2
C. ?a2
D. 
Mathematics
The rectangular coordinates of a point are given. Find polar coordinates of the point. Express ? in radians.(2
, 2)
A. 
B. 
C. 
D. 
Mathematics
Find the surface area of a rectangular box with length L, width W, and height H.L = 13.4 m, W = 14.5 m, H = 21.6 m
A. 1404 m2 B. 1281 m2 C. 797 m2 D. 1594 m2
Mathematics