Solve the problem.The distance that a spring is stretched by a hanging object varies directly as the mass of the object. If an object with a mass of 27 kg stretches a spring 31 cm, find the stretch when the object has a mass of 22 kg.
A. 19.2 cm
B. 80 cm
C. 1.1 cm
D. 25.3 cm
Answer: D
Mathematics
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Solve the system using the inverse of the coefficient matrix of the equivalent matrix equation.-5x + 3y = 83x - 6y = -30
A. (6, 2) B. (-2, -6) C. (2, 6) D. (-6, -2)
Mathematics
Perform the indicated operation. Write the result in scientific notation.
A. 40 × 1019 B. 40 × 1018 C. 9 × 1018 D. 9 × 1019
Mathematics
Rewrite the following using radicals; then simplify if possible.6251/2
A. 
= 25
B. 
= 625
C. 
= 50
D. 
= 12.5
Mathematics
Rewrite the trigonometric expression as an algebraic expression involving the variable u. Assume that 
and that the value of the "inner" inverse trigonometric expression represents an angle ? such that 
cos (sin-1 u)
A. 
B. 
C. 
D. 
Mathematics