Solve the problem.Frank can type a report in 7 hr. James can type it in 6 hr . How long will it take the two of them working together?

A.  hr
B.  hr
C. 3 hr
D. 42 hr


Answer: C

Mathematics

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Solve the proportion.-  = 

A. {-48}
B. {-16}
C.
D.

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Multiply.

A. 69,590 B. 80,590 C. 70,590 D. 71,590

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Plot the complex number.z = -2 - i 

A.

B.
 
C.
 
D.
 

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Find the vertex of the parabola and determine if it is a maximum or minimum. f(x) = -2x2 - 8x - 7

A. (-2, 1); maximum B. (-2, 1); minimum C. (-2, -1); maximum D. (-2, -1); minimum

Mathematics