Fill in the blank with one of the words or phrases listed below.
An equation that describes a known relationship among quantities is called a 
.
A. linear inequality in one variable
B. no solution
C. formula
D. linear equation in one variable
Answer: C
Mathematics
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Reduce the fraction, if possible.
A. 
B. 
C. 
D. 
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Solve the inequality.16 - x2 ? 0
A. x ? -4 B. x ? -4 or x ? 4 C. x ? 4 D. -4 < x < 4
Mathematics
Classify the angle as acute, right, obtuse, or straight.
A. right B. straight C. acute D. obtuse
Mathematics
?Solve the equation by extracting square roots.
?
A. ?x = 
, x = 
B. ?x = 
C. ?x = 
, x = 
D. ?x = 
E. ?x = 
, x = 
Mathematics