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	Monthly Pension		2018-05-28
		Kenneth pose la question : Hello: I have a question regarding how the units cancel in the following: A company uses the following calculation to determine the monthly payment for its employees as they retire: 1.1% * average 5 years highest salary * years of service If an employee worked 33 years and his average 5 year salary is $30,705.17, what is his monthly payment? I used the following to determine his monthly payment, but I am not sure how the units cancel especially the years. 1.1% * $30,705.17 * 33 years divided by 12 months/year I determined his payment as $928.83 per month, but the year units do not cancel unless the 1.1% is per year. Is the correct calculation 1.1%/year * $30,705.17 * 33 years divided by 12 months/year so that the units cancel properly? The $\$30,705.17$ is an average for 5 years of working. It is not $30,705.17 per year. I thank you for your assistance. Penny Nom lui répond.
	A suspension bridge		2016-08-18
		sai pose la question : The main cable of a suspension bridge has the shape of a parabola. The cables are strung from the top of two towers, 61 metres apart, each 15.25 metres high above the roadway. The cable is 1.5 metres above the roadway at the point that is directly between the towers. h(x)=a(x-30.5)^2+1.5 where a is the constant and its value to be determined. a) determine the value of the constant a by using that the fact that height of the suspension cable, h(x) is 15.25 metres at each tower. Hence, write the updated model equation. Penny Nom lui répond.
	A parabolic suspension bridge		2014-03-11
		jeffrey pose la question : the towers of a parabolic suspension bridges 200 meter long are 40 meter high and the lowest point of the cable is 10 meter above the roadway.Find the vertical distance from the roadway to the cable at 50 meter from the center. Penny Nom lui répond.
	A suspension bridge		2011-11-30
		jennifer pose la question : suspension bridges like the golden gate bridge, are used to span large distances. when the main curved cables are attached to the deck by vertical cables they will end up in the shape of parabola. assume that we need to build a bridge that spans 2,400 feet. the two towers 165feet tall each where placed at 400feet from either side. the lowest point of the center of the bridge at 10feet. vertical suspension cables where placed at 25foot interval. how many feet of cable are needed to connect the deck to the main cables between the two towers? show all working. Penny Nom lui répond.
	The suspension cables of a bridge		2010-07-29
		Mike pose la question : what is the formula for the suspension cables of a bridge. The towers are 200 ft above the roadway The towers are 3400 ft apart The cable if at 8ft in the middle of the span Robert Dawson lui répond.
	The capilano suspension bridge		2010-06-03
		nida pose la question : the capilano suspension bridge in north vancouver is the world's highest footbridge of its kind. the bridge is 140m long . from the ends of the bridge the angles of depression of a point on the river under the bridge are 41 degrees and 48 degrees. how high is the bridge above the river to the nearest metre Penny Nom lui répond.
	What is so important about quadratics?		2008-11-29
		zoe pose la question : what is so important about quadratics? Harley Weston lui répond.
	Parabolic suspension bridge		2007-10-09
		Jessica pose la question : A suspesion bridge with weight uniformly distributed along its length has twin towers that extend 75 meters abouve the road surfce and are 400 meters apart.The cables are parabolic in shape and are suspended from the tops of the towers. The cables touch the road surface at the center of the bridge. Find the height of the cables at a point 100 meters from the center. (Assume that the road is level.) Stephen La Rocque lui répond.
	A suspension bridge		2001-03-24
		Janna pose la question : The cables of a suspension bridge hang in a curve which approximates a parabola. The road bed passed through the vertex. If the supporting towers are 720m apart and 60m high, find: a) an equation of the parabola (it's y = 1/2160x2) b)the height of the cables at a point 30m from the vertex. I substituted 30 in for the x value and got 0.42 and the answer is 42. What did I do wrong? Denis Hanson and Claude Tardif lui répond.
	Bridges and parabolas		2000-11-18
		Lauren pose la question : My name is Lauren, and Im a secondary school student in Ontario. For my gr11 advanced math class I have to find out how and why parabolics are used in arch bridges and write 3 paragraphs on it. People who cohse satelites and whatnot are lucky - I've found a ton of info, but for arch bridges there seems to be nothing. Harley Weston lui répond.

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