Solve the equation.
- x = 6
A. {-7, -3}
B. {-3}
C. {-7}
D. ?
Answer: B
Mathematics
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Factor the difference of two squares.4 - x2
A. (2 - x)2 B. (2 + x)2 C. prime D. (2 - x)(2 + x)
Mathematics
Solve the equation for the specified variable.9k + ar = r - 8y for r
A. r = 
or r = 
B. r = 
or r = 
C. r = 
or r = 
D. r = 
or r = 
Mathematics
Find the domain of the composite function f?g.f(x) = 
, g(x) = x + 6
A. (-?, -10) ? (-10, ?) B. (-?, ?) C. (-?, -10) ? (-10, -6) ? (-6, ?) D. (-?, -16) ? (-16, ?)
Mathematics
Solve the problem.The two legs of a right triangle are 10 meters and 20 meters, respectively. Find the hypotenuse of the triangle, rounded to the nearest hundredth of a meter.
A. 22.36 m B. 250 m C. 500 m D. 15 m
Mathematics