Solve the quadratic inequality. Write your answer in interval notation.x2 < -7
A. (-?, ?)
B. No solutions
C. (0, 7)
D. (-?, 0)
Answer: B
Mathematics
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Find the whole.43% of what number of seconds is 68 seconds?
A. 1580 seconds B. 60 seconds C. 0.6 seconds D. 158 seconds
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Solve.5 ? y = 75
A. 15 B. 18 C. 16 D. 17
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Simplify the expression.
? 
A. 2 
B. 2 
+ 2 
C. 4
D. 
Mathematics
Solve the system of equations using Cramer's Rule if it is applicable. If Cramer's Rule is not applicable, say so.
A. x = - 
, y = 
; 
B. x = 
, y = 
; 
C. not applicable
D. x = - 68, y = 3; 
Mathematics