Find the sum or difference. Express the answer reduced to lowest terms and use the denominator given in the first rational expression.
- 
A. 
B. 
C. 
D. 
Answer: C
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Find the distance between the pair of points. Where appropriate, give an approximation to three decimal places.(5, 4) and (-4, -3)
A. 2
B. 63
C. 
? 5.657
D. 
? 11.402
Write the system of linear equations represented by the augmented matrix. Use x, y, z, and, if necessary, w for the variables. Then use back-substitution to find the solution.
A. {(-8, -5, 8, -4)} B. {(-102, 124, 25, -3)} C. {(-3, 25, 124, -102)} D. {(-6, 0, 13, -3)}
Solve, rewrite in interval notation, and graph.5x - 8 ? -13 and 5x - 8 ? 7
A. (-1, 3)
B. [-1, 3)
C. (-1, 3]
D. [-1, 3]
Solve the problem.How many different license plates can be made using 2 letters followed by 5 digits selected from the digits 0 through 9, if neither letters nor digits may be repeated?
A. 9,828,000 B. 19,656,000 C. 81,900 D. 67,600,000