Express the statement as an equation involving the indicated variables.The area A of a triangle is one-half the product of its base b and its height h.
A. A = 
(b + h)
B. A = 
bh
C. A = 2bh
D. A = bh
Answer: B
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Simplify the expression.eln x3 - y ln x
A. x3-y
B. x3 - xy
C. 
D. x3 - xy
Reduce to lowest terms.
A. 18 B. 18k2 C. 4k2 D. 4k
Solve.The longitudinal shrinkage SL (in mm) that occurs during welding is given by the formula 
where I is the welding current in amperes, L is the length of the weld in millimeters, and t is the thickness of the plate in millimeters. Suppose an electrode is welded at 175 amp, the length of the weld is 310 mm, and the plate is 10 mm thick. Calculate the longitudinal shrinkage that occurs during welding.
A. 0.115 mm B. 0.035 mm C. 0.235 mm D. 0.165 mm
Find all solutions of the equation in the interval [0°, 360°). Round the answers to the nearest tenth of a degree.sin ? = 0.5
A. {30.0°, 330.0°} B. {30.0°} C. {30.0°, 210.0°} D. {30.0°, 150.0°}