Solve the problem.A rectangular board is 12 by 20 units. How far from the long side of the board will the foci be located to determine the largest elliptical tabletop?
A. 2.0
B. 8.0
C. 4.0
D. 6.0
Answer: A
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Find the missing parts of the triangle. Round to the nearest tenth when necessary or to the nearest minute as appropriate.C = 112.9°a = 8.4 kmb = 11.3 km
A. c = 16.5 km, A = 28°, B = 39.1° B. c = 22.3 km, A = 26°, B = 41.1° C. c = 19.4 km, A = 30°, B = 37.1° D. No triangle satisfies the given conditions.
Pivot once about the circled element in the simplex tableau, and read the solution from the result. 
A. x3 = 14, s2 = -6, s3 = 4, z = 42; x1, x2, s1 = 0 B. x3 = 14, s2 = 12, s3 = -4, z = 42; x1, x2, s1 = 0 C. x3 = 14, s2 = -12, s3 = 4, z = -42; x1, x2, s1 = 0 D. x3 = 14, s2 = 12, s3 = 4, z = 42; x1, x2, s1 = 0
Solve the logarithmic equation.ln x - ln (x - 2) = ln 3
A. 
B. 1
C. 3
D. No solution
Simplify.
A. 
B. - 
C. 
D. 