Simplify the expression using multiplication.The area of the vertical faces of a rectangular solid with height h and base edges l and b can be expressed as 
Write this formula without parentheses and without multiplication signs.
A. A = 2h + lb
B. A = 2hl + b
C. A = 2hlb
D. A = 2hl + 2hb
Answer: D
Mathematics
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Suppose you have the following project digraph. (The numbers in parentheses represent hours.)
The length of the critical path from C is
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Sketch the vectors u and w with angle ? between them and sketch the resultant.
= 8, 
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A. 
B. 
Mathematics