Solve the problem.How many liters of a 30% alcohol solution must be mixed with 90 liters of a 50% solution to get a 40% solution?

A. 18 L
B. 180 L
C. 90 L
D. 9 L


Answer: C

Mathematics

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Determine the slope and y-intercept of the line represented by the equation. Graph the line using the slope and y-intercept.2x = 5y - 16

A. m = - , y-intercept is (0, - 8)


B. m = - , y-intercept is (0, - )


C. m = , y-intercept is (0, - 8)


D. m = , y-intercept is (0, )


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A value of sinh x or cosh x is given. Use the definitions and the identity  to find the value of the other indicated hyperbolic function.sinh x = - , cosh x =

A. - 
B.  
C.  
D.  

Mathematics

Find the domain of the composite function f ? g.f(x) = x + 5; g(x) = 

A. {x 
B. {x 
C. {x 
D. {x 

Mathematics

Find the lateral area of a cylinder with radius 4 in and height 6.2 in. Round the answer to two decimal places.

(a) 155.82 in² (b) 77.91 in² (c) 38.96 in² (d) 233.73 in²

Mathematics