A boy walks across a railroad bridge. After he has crossed 3/8 of the bridge, he looks back to see a train approaching the bridge from behind. Being a mathematical whiz, he quickly sizes up the situation. If he runs back toward the train, he will reach the beginning of the bridge and be able to jump clear, just as the train starts across the bridge. If he runs forward, he will reach the far end
of the bridge and be able to jump clear just as the train reaches that end. If the boy runs at 10 miles per hour, how fast is the train going?
Solve the following time-rate-distance problems using the IPO method. Ignore time zones.
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Answer the following statements true (T) or false (F)
1. If you pass an array to a function, any changes made to the array in the function remain local to the function and do not affect the array values outside that function. 2. Given: ``` var x = 100; var boolx = new Boolean(x); document.write(boolx); ``` The result will be either true or false. 3. The following will display today's date: ``` var day = new Date(); document.write(day); ``` 4. A JavaScript external source file must begin with the tag. 5. If a program has a function named doStuff() in the
section of a web page and a different function with the same name in a linked external source file, the function in the external source file takes precedence.Case-Based Critical Thinking QuestionsCase 4-2In your role as project manager, you have two available resources, Simone and Sydney, to bring to bear on a series of tasks. You are experimenting with what happens as you introduce them at various points in the workflow.Assume effort-driven scheduling is in place. Which of the following does NOT happen when Sydney is added as a new resource assignment on a task to which Simone has been assigned?
A. Work remains constant. B. Work is redistributed between Simone and Sydney. C. Duration is increased to balance the W=D*U formula. D. Duration is decreased to balance the W=D*U formula.
Match each of the following terms to its best description:I.CollapseII.ExpandIII.SubtotalIV.Grand totalV.Summary statisticsA.Show less detailB.Calculations like totals or averagesC.Show more detailD.Show intermediate calculated values for a group of itemsE.The full summary of all items in a group
Fill in the blank(s) with the appropriate word(s).
Which of the following is a suggested decision to make when you plan a workbook?
A. determine how to manipulate the worksheets B. determine the necessary functions and formulas needed C. determine what to add to the requirements document D. determine whether to use the Format Painter button