Translate the problem to a system of equations, then solve using Cramer's Rule.The perimeter of a rectangle is 24 meters. If the width is doubled and the length is tripled, the perimeter is 60 meters. Determine the original width and length.

A. width = 10 m, length = 20 m
B. width = 8 m, length = 12 m
C. width = 6 m, length = 6 m
D. width = 12 m, length = 12 m


Answer: C

Mathematics

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Evaluate.sin-1 

A. - 
B.
C. - 
D.

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Translate to an equation and solve.  2% of what is 57 ?

A. 22,800 B. 1.43 C. 228 D. 2280

Mathematics

Find the asymptotes of the hyperbola.7x2 - y2  - 42x + 4y - 53 = 0

A. y - 3 = (x - 2), y - 3 = -(x - 2)
B. y - 2 = (x - 3), y - 2 = -(x - 3)
C. y - 2 = 7(x - 3), y - 2 = -7(x - 3)
D. y - 2 = (x - 3), y - 2 = - (x - 3)

Mathematics

Solve the problem.Suppose economists use as a model of a country's economy the equation  C = 0.6716D + 5.9845where C represents the consumption of products in billions of dollars and D represents disposable income in billions of dollars. Solve the equation for D and use the result to determine the disposable income D if the consumption C is $8.42 billion. Round your answer to the nearest tenth of a billion.

A. $3.6 billion B. $3.5 billion C. $11.6 billion D. $6.6 billion

Mathematics