Solve the equation.
A. 
, 
B. 
, 
C. 
, 
D. 
, 
E. 
Answer: A
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Use a calculator to approximate the square root to three decimal places. Check to see that the approximation is reasonable.
A. 3.321 B. 3.311 C. 3.289 D. 3.303
Solve. To measure the spread of data, statisticians compute the sample variance of the data. For a sample of size 3, the sample variance can be computed using the expression 
where m is the mean of the three values a, b, and c. Rewrite this expression without parentheses, combining like terms.
A. 3m2 - 2am - 2bm - 2cm + a2 + b2 + c2
B. 
C. 
D. 
Solve the following system by any appropriate method. If there is no real number solution, so state.y2 = -8xy = x - 2
A. (-2, -4), (-2, 4), (2, 0) B. (-2, -4), (2, 0) C. (-2, -4), (-2, 4) D. (-2, -4)
Identify the correspondence.The two triangles shown below are congruent. List the angles corresponding to ?E, ?F, and ?G in order.
A. ?K, ?L and ?M B. ?M, ?K and ?L C. ?L, ?K and ?M D. ?K, ?M and ?L