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Given the following model:

Which statement is true?
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What is a property that may be calculated by analysis of the model?
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What is the statement "An activity specifies the behavior of a use case?
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A system engineer has created the following model of a tank system composed of two tanks and a pipe connecting them:

The system engineer wants to mathematically relate the flow of water through the pipe using the following mass conservation equation: Tank_System wFlowin flowRate * Tank_System pipe endA_Area = Tank_System wFlowOut flowRate * Tank_System pipe endB_Area How would the system engineer model this in SysML?
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Given the following bdd for a token ring network, in which a token flows from node n to node n+1 except that when it reaches the node at the maximum position n flows to the node at the minimum position.

Which ibd correctly models this behavior?
A)

B)

C)

D)
