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To deliever a package, a messenger must travel at a speed of 60 mi/h in still water. The messenger goes by land to a dock and then travels on a river against a current of 4 mi/h. He reaches the destination in 4.5 hours and then returns to the starting point in 3.5 hours. How far did the messenger travel by land and how far by water?
Please do NOT work this problem. but how would you know in this case whether to approach it from a min/max point? Is there anything other than the obvious "least" keyword?
Rule of Probability, A study of 203 advertising firms revealed their income after taxes: What is the probability an advertising firm selected at random has under $1 million in income after taxes? (Round your answer to 2 decimal places.)
The base of S is the triangular region with vertices (0, 0), (4, 0), and (0, 4). Cross-sections perpendicular to the y-axis are equilateral triangles.
The following data represent the length (in months) of time it takes for a tumor to reoccur after chemotherapy. Use five classes to determine the class width.
Consider a beam of length L and a fulcrum a length x away from one end. There are weights, W1 and W2, placed on opposite ends of the beam. Find x so that the system is in equilibrium.
A window frame that seems rectangular has height 408 cm, length 306 cm, and one diagonal with length 525 cm. Is the window frame really rectangular? Explain please.
The price of a gallon of unleaded gas has risen to today. Yesterday's price was . Find the percentage increase. Round your answer to the nearest tenth of a percent.
Also, if the variables in an equation were reversed, what would happen to the graph of the equation? This was the example I was given, how would the graph of y = x² relate to the graph of x = y²?
What are the practical uses of scientific notation? Why is scientific notation so important in modern-day society?
Smalltown Elevator produces elevator rails. To meet specifications, an elevator rail must be between 0.995 inches and 1.005 inches in diameter. Suppose that the diameter of an elevator rail follows a normal random variable with mean of 1 inch
Frank is going to buy some ties at $7.50 per tie and some shirts at $18.50 per shirt. If he buys twice as many ties as shirts and spends no more then $205, what is the greatest number of shirts he can buy?
determine the number of children who made the trip if C(n)=192.00.
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