Solve the equation and state the solution set.
- 
= 
A. { } or ?
B. {-2}
C. {1}
D. {-1}
Answer: D
Mathematics
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Find an equation of the line that contains the given point and is perpendicular to the given line.x + 5y = -5, (5, 5)
A. y = 5x - 30
B. y = - 
x + 4
C. y = 5x - 20
D. y = 
x + 4
Mathematics
Perform the indicated operation.u = 10i + j, v = -3i - 3j, w = i - 2j; Find w + (u - v).
A. -12i - 2j B. 14i + 2j C. 13i + 5j D. 2i + 14j
Mathematics
Find the least common multiple for the set of numbers.7, 14, 28, 49
A. 392 B. 147 C. 196 D. 49
Mathematics
Find all cube roots of the complex number. Leave answers in trigonometric form.-125i
A. 5 cis 90°, 5 cis °210, 5 cis 330° B. 5 cis 30°, 5 cis °60, 5 cis 90° C. 5 cis 90°, 5 cis °180, 5 cis 270° D. 5 cis °210, , 5 cis 270°, 5 cis 330°
Mathematics