Write the number as the product of a real number and i.
A. 5i
B. 5
C. -5i
D. -5
Answer: A
Mathematics
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Solve.
= 
A. -7, 13 B. 6, 14 C. -7, 14 D. -1, 7
Mathematics
Find an equation of a line satisfying the following conditions.Horizontal, passing through (4.6, 3.4)
A. y = 3.4 B. x = 4.6 C. x = 3.4 D. y = 4.6
Mathematics
Find the eigenvalues and the corresponding eigenvectors 
What will be an ideal response?
Mathematics
A 50-meter line is used to tether a helium-filled balloon. Because of a breeze, the line makes an angle of approximately 55° with the ground. What is the height of the balloon? (Round the answer to one decimal place.) ?
A. 45 m B. 41 m C. 43 m D. 49 m E. 47 m
Mathematics