Solve the problem.How many spanning trees does the following network have?
A. 19
B. 18
C. 17
D. 10
E. none of these
Answer: B
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Match the surface show below to the graph of its level curves.
A. 
B. 
C. 
D. 
Rewrite the equation such that each resulting term or combination is in an integrable form.5 sin(5x - 7y) dx - x dy = y dx + 7 sin(5x - 7y) dy
A. [5 sin(5x - 7y) dx - 7 sin(5x - 7y) dy] + (y dx - x dy) = 0 B. [5 sin(5x - 7y) dx - x dy]- [7 sin(5x - 7y) dy + y dx] = 0 C. [5 sin(5x - 7y) dx + 7 sin(5x - 7y) dy] - (x dy + y dx) = 0 D. [5 sin(5x - 7y) dx - 7 sin(5x - 7y) dy] - (x dy + y dx) = 0
Provide an appropriate response.Through a mix-up on the production line, 5 defective televisions were shipped out with 25 good ones. What is the probability that a customer will choose a defective one at random?
Fill in the blank(s) with the appropriate word(s).
Divide and simplify.
÷ 
A. 
B. 
C. 
D. z - 4