do you know anything about matrices??? the cramer's rule is pretty simple if you know matrix algebra...
dan
Set up appropriate systems of two linear equations and slove the systems algebraically. all data are accurate to at least two significant digits.
the weight Wf supported by the front wheels of a certain car and the weight Wr supported by the rear wheels together equal the weight of the car, 17700N. also , the ratio of Wr to Wf is 0.847. what are the weights supported by each set of wheels??
can any kind hearted help me out with this word problems
Want to learn about them?
(Post #7 and #16)
those are determinants methodOriginally Posted by ThePerfectHacker
i mean the question i post was solving by algebraically.
which than i am confused in doing so!
i can use cramer's rule and i am quite okay with it, just that algebraically i am real bad at it.
You just have to see how can you reduce two equations having two variables to a single equation having one variable.Originally Posted by danielwu
So, add both the equations.
goes out and the resultant equation contains only one variable, i.e., . The resulting equations is
Then substitute the value of in one of the previous equations to find
hi there i have problem with this word problems
Set up appropriate systems of two linear equations in two unknowns and then solve the systems by determinants. all numbers are accurate to at least two significant digits.
(A) A shipment of 320 cell phones and radar detectors was destroyed due to a truck accident. on the insurance claim, the shipper stated that each phone was worth $110, each detector was worth $160, and their total value was $40700. how many of each were in the shipment?
(1) $110 + $160 = $40700<--------is the first equation right??
(2) ??????????????????????
was wondering is there a way to master these word problem?