Solve the problem.If x varies inversely as v, and x = 8 when v = 7, find x when v = 28.
A. x = 4
B. x = 49
C. x = 14
D. x = 2
Answer: D
Mathematics
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In a certain city there is a river running through the middle of the city. There are three islands and seven bridges as shown in the figure below.
In the graph that models this situation, the degree of the vertex that represents island B is
A. 2. B. 1. C. 4. D. 3. E. none of these
Mathematics
Evaluate the expression.cot 450°
A. Undefined
B. 1
C. 0
D. 
Mathematics
Solve the problem.The cost of manufacturing clocks is given by c = 9
, where c is the total cost and n is the number produced. What is c when no clocks are produced?
A. $225 B. $9 C. $45 D. $15
Mathematics
Subtract and simplify. Write the answer as a mixed number as needed.20
- 
A. 18
B. 19
C. 19
D. 20
Mathematics