Solve the quadratic inequality by any method. Write your answer in interval notation.x2 - 10x + 21 ? 0
A. [7, ?)
B. [3, 7]
C. (-?, 3] ? [7, ?)
D. (-?, 3]
Answer: C
Mathematics
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Add or subtract as indicated. Simplify the result, if possible.
+ 
A. 
B. 0
C. - 
D. 
Mathematics
Solve the problem.x varies inversely as v, and x = 35 when v = 2. Find x when v = 10.
A. x = 14 B. x = 4 C. x = 7 D. x = 5
Mathematics
Find 
. Write your answer in standard polar form with the argument in radians.z1 = 
, z2 = 
A. 
B. 
C. 
D. 
Mathematics
Multiply or divide as indicated.
? 
A. 
B. 
C. 6
D. 
Mathematics