Solve the equation.
- 
= 
A. No solution
B. 4
C. 7
D. -4
Answer: A
Mathematics
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Add and simplify.
+ 
A. - 
B. - 
C. - 
D. - 
Mathematics
Factor.54 - 21x - 20x2
A. (4x + 9)(5x - 6) B. (4x - 9)(5x + 6) C. (4x - 6)(5x + 9) D. (4x - 9)(5x - 6)
Mathematics
Solve the problem.Find the measures of the complementary angles.
A. 40° and 50° B. 80° and 100° C. 20° and 25° D. 45° and 45°
Mathematics
Find the length of the curve.The spiral r = 4?2, 0 ? ? ? 2
A. 
((?2 + 1)3/2 - 1)
B. 
C. 
?5
D. 
Mathematics