Solve the equation.
= 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Which of the following is a reason for having students do writing exercises in mathematics?
a. To improve students' mathematical understanding b. To elicit students' attitudes about mathematics c. To encourage metacognitive activity d. All of the above e. None of the above
Mathematics
Solve the equation. Check your solution.
(5x - 
) - 
= 
A. 
B. 
C. 
D. 
Mathematics
Simplify the radical.
A. 2
B. 2ab
C. -2a2b
D. 2ab
Mathematics
Find all values of the variable for which the rational expression is undefined.
A. 7, 9 B. None C. 7 D. -7
Mathematics