Rewrite the rational expression as an equivalent rational expression with the given denominator.
= 
A. - 
B. - 
C. 
D. - 
Answer: A
Mathematics
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Determine if each ordered pair is a solution to the given system of inequalities in two variables.xy = 56x + y = -15(i) (-8, -7); (ii) (7, 8)
A. (i) Yes; (ii) Yes B. (i) Yes; (ii) No C. (i) No; (ii) No D. (i) No; (ii) Yes
Mathematics
Find the square root if it is a real number, or state that the expression is not a real number.- 
A. -13 B. 13 C. not a real number D. -84
Mathematics
Approximate the value using a calculator. Express answer rounded to three decimal places.32.15
A. 10.612 B. 27.000 C. 9.938 D. 6.450
Mathematics
Find u ? v, where ? is the angle between the vectors u and v. Round the answer to the nearest tenth.
= 4, 
= 5, ? = 
A. 28.3 B. 15.7 C. 25.5 D. 14.1
Mathematics