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6 articles trouvés pour ce sujet.

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	Displacement		2011-12-17
		faisal pose la question : a helicopter takes off and travels 300 km due north then returns to its landing field. what is its displacement? Penny Nom lui répond.
	A path around a pond		2009-10-31
		adeniji pose la question : find the area of a concrete path 2m wide surrounding a circular pond 12m in diameter Penny Nom lui répond.
	The path of a baseball		2008-06-04
		Tom pose la question : How high would a batter have to hit a ball to clear the stadium roof in right field if the distance to the right field fence is 320 feet from home plate? Is this solvable? Janice Cotcher lui répond.
	The path of a submarine		2006-02-26
		Meadow pose la question : Suppose that a submarine has been ordered to follow a path that keeps it equidistant from a circular island of radius r and a straight line shoreline that is 2 units from the edge of the island. Derive an equation of the submarine path, assuming that the shoreline has equation x = -p and that the center of the island is on the x-axis. Penny Nom lui répond.
	The Terror Run		2000-03-18
		Danny Mclean pose la question : A fairground's most popular attraction is a roller coaster ride known as the Terror Run. One stretch of track is called the Missile Path and is in the form of a parabolic curve. B is 180m horizontally from A and the highest point of the curve is 100m above A and B. A.. The owner works out a quadratic expression to describe the Missile Path. What is the expression He found? B.. A safety Engineer examined the structure and observed that points A and B were likely to be damaged due to the steepness of the Missile path near these points. The owner can see no way to make the Missile path less steep near A and B and to keep the height of the ride the same. HOW CAN IT BE DONE? Harley Weston lui répond.
	The two-digit numbers from 10-99		1998-01-21
		Alexis Riddle pose la question : My name is Alexis. I'm a student in 8th grade and I'm taking Algebra I Honors. My question is: In a string of numbers, two adjacent digits are considered as a two-digit number. For instance, the string 11012 contains the numbers 10, 11, and 12. What is the number of digits in the smallest string that contains all of the two-digit numbers from 10-99? Please help and thank you for any assistance you can give me. Penny Nom lui répond.

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