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May 23, 2015

Homework Help: Matrices Word Problem

Posted by GetYourLeash on Friday, July 22, 2005 at 1:34am.

The stopping distance of a car traveling 25mph is 61.7 feet, and for a car traveling 35 mph it is 106 feet. The stopping distance in feet can be described by the equation y = ax² +bx, where x is the speed in mph.
(a) Find the values of a and b.
(b)Use your answers from part (a) to find the stopping distance for a car traveling 55 mph.


y=ax^2+b
61.7=a*25^2 +b and
106=a*35^2 +b

subtracting the first from the second equation.

106-61.7=a(35^2-25^2) solve for a, then put that a into either equation to solve for b.


What are the features of a matrix?


What are the features of a matrix?



how do you solve this you have club a and b added together they equal 121 well if club a was increased by 4 times and club b was decresed by half what is a and b equal present


how do you solve this you have club a and b added together they equal 121 well if club a was increased by 4 times and club b was decresed by half what is a and b equal present

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