Determine if the given ordered triple is a solution of the system.(-4, 1, 5)  x + y + z = 2  x - y + 2z = -45x + y + z = 22

A. not a solution
B. solution


Answer: A

Mathematics

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Solve the problem.Suppose that z varies jointly with x and y and that z = 196 when x = 7 and  Find the constant of proportionality k. Then, find z when x = 6 and 

A. k = 2; z = 36
B. k = 19,208; z = 
C. k = 0.2; z = 3.6
D. k = 4; z = 72

Mathematics

Write a chain rule formula for the following derivative. for w = f(p, q); p = g(x, y), q = h(x, y)

A.  =   +  
B.  =    +   
C.  =   
D.  =    +   

Mathematics

Rewrite the expression as a single trigonometric function using a double-angle identity.4 sin 2? cos 2?

A.  sin 16?
B. cos 4?
C. cos 8?
D. 2 sin 4?

Mathematics

Provide an appropriate response.Consider a linear program with an objective function for profit. Thinking of isoprofit lines, if the objective function is evaluated at the corner points of polygon  and   and  is it safe to assume that p(D) is not the corner point at which the profit is maximized?

A. Yes B. No

Mathematics