Rewrite the fractions using the least common denominator. ,  , and 

A.  ,  , and 
B.  ,  , and 
C.  ,  , and 
D.  ,  , and 


Answer: A

Mathematics

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Multiply or divide (as specified) the numerator and denominator by the given factor to obtain an equivalent fraction. (divide by x + 1)

A.
B.
C.
D.

Mathematics

Given the values of x and y, find an equation of variation in which y varies directly as x.y = 1.5, when x = 0.4

A. y = 1.5x
B. y = 
C. y = 3.75x
D. y = x

Mathematics

Use Cramer's rule to solve the system. If D = 0, use another method to complete the solution.  x + y + z = 0  x - y + 2z = -42x + y + z = -5

A. {(2, -5, 3)} B. ? C. {(-5, 3, 2)} D. {(2, 3, -5)}

Mathematics

Suppose that a manufacturer produces two brands of a product, brand 1 and brand 2. Suppose the demand for brand 1 is thousand units and the demand for brand 2 is

/> thousand units, where p1 and p2 prices in dollars. If the joint cost function is , in thousands of dollars, how many of each brand should be produced to maximize profit? ? A. 74 units of brand 182 units of brand 2 B. 9 units of brand 152 units of brand 2 C. 74 units of brand 152 units of brand 2 D. 14 units of brand 138 units of brand 2 E. 27 units of brand 177 units of brand 2

Mathematics