Simplify the complex rational expression.
A. 
B. 
x + 
C. 
D. 
Answer: D
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Find the least common multiple.20, 50
A. 100 B. 1,000 C. 50 D. 70
Find the direction angles of the vector. Round to the nearest degree, if necessary.v = 6i - 2j - 3k
A. ? = 31°, ? = 107°, ? = 115° B. ? = 41°, ? = 104°, ? = 112° C. ? = 18°, ? = 108°, ? = 223° D. ? = 83°, ? = 92°, ? = 94°
Determine the domain and range of the relation.{(5, -2), (-6, -8), (2, -7), (3, -9), (10, 2)}
A. Domain: {-6, -2, 10, -8, 3}; Range: {-7, 5, -9, 2, 2} B. Domain: {-7, 5, -9, 2, 2}; Range: {-6, -2, 10, -8, 3} C. Domain: {-2, -8, -7, -9, 2}; Range: {-6, 10, 3, 5, 2} D. Domain: {-6, 10, 3, 5, 2}; Range: {-2, -8, -7, -9, 2}
Write the statement as a power function equation. Use k as the constant of variation.The surface area of a sphere S varies directly as the square of its radius r.
A. S = k2r
B. S = 
C. S = 
D. S = kr2