Solve the equation for x.
?
?
?
A. 
, 
B. 
, 
C. 
, 
D. 
, 
E. 
, 
Answer: B
Mathematics
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Solve the problem.The dimensions of a cardboard box were measured as 30 cm, 90 cm and 40 cm, with the percentage error in each dimension not exceeding 6 percent. Approximate the worst possible percentage error in the volume of the box. Assume that the cardboard is of negligible thickness.
A. 13% B. 18% C. 6% D. 12%
Mathematics
Convert the units.820 mm = cm
A. 8200 cm B. 82 cm C. 82,000 cm D. 8.2 cm
Mathematics
Simplify.0 ÷ 6 + 9 × 4
A. Undefined B. 42 C. 60 D. 36
Mathematics
Find 
. Write the answer in polar form with the argument between 0° and 360°z1 = 5(cos 200° + i sin 200°), z2 = 4(cos 50° + i sin 50°)
A. 
(cos 40° + i sin 40°)
B. 
(cos 40° + i sin 40°)
C. 
(cos 150° + i sin 150°)
D. 
(cos 150° + i sin 150°)
Mathematics