I am still confused on number one because it starts with the same variable so I dont really know where to start can you help....?
Elimination Method....I am not understanding this method either and need some help here is what I am working on: 1) x+8y=33 -x+4y=3 2) 5x+5y=-7 7x-2y=13 3) 0.3x-0.2y=4 0.5x+0.3y=-7/17 Can someone please help me with these!
For number 3 I got (6.7,51.8) is this correct?
Okay so what about number one it is a + and the a - for the second problem how do you figure a subtitution problem like that? do the signs make a difference?
Okay but the homework is saying the answer is (-7,8) so how would they have gotten that from the equation you did above?
Can someone help me solve the following problems using the substituion method? I need to find the ordered pairs and I do not get it.... Here they are 1) 6m+n=47 m-4n=12 2) 6x+4y=-10 -7x+y=57 3) 5x+7y=43 -4x+y=25
yes page 324 in the book provides a detailed list so I just copied those right out of the book Thanks
If you see a lightening bolt, then count 4 seconds until you hear thunder, about how far away was the lightening strike?
A tennis ball is dropped from the top of a building. It falls for 2.5 seconds before it hits the ground. (a) What velocity is the tennis ball traveling right before it hits the ground? (b) How high is the building?
If an arrow is fired at 200km/h horizontally, about how long will it take to strike a target 30 meters away?
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