Tutors Answer Your Questions about Linear-equations (FREE)
Question 9428: What is the equation of the line that contains the points with (x, y) coordinates (-3, 7) and (5, -1)?
I know the answer is: y=-x+4, but I don't understand how they came up with that answer, can you please help???
Click here to see answer by askmemath(368)  |
Question 9517: In a mixture of concrete, there are 3 lb of cement mix for each pound of gravel. If the mixture contains a total of 140 lbs of these two ingredients, how many pounds of gravel are there?
Click here to see answer by DWL(56) |
Question 9734: can anyone help me?
A walker walks a course at a constant speed of 4 mph. 40 min after the walker begins, a cyclist starts on the same course at a constant speed of 16 mph. how long after the cyclist begins does the cyclist overtake the walker? What distance have they traveled? Has teh walker completed the course before the cyclist catches up?
Click here to see answer by Earlsdon(6294) |
Question 10080: Hello,
I have been away from Algebra for 5 years and have completely forgotten everything. I am currently taking 2 separate 1105 college algebra and 1 1033 intermediate class but even though I am putting in so many study hours I still can't grasp the concept of these quadratic equations. Is there anywhere that I can get "info for dummy's" like me that will explain in dummy terms the different ways to solve like....(1)factoring (2)completing the square (3)square root method (4)quadratic formula. I am living on about 3 hours of sleep a night due the extra study time I am putting in on these 3 algebra classes.... (plus I am taking 3 other colleges classes and I work part-time and have a full-time 2 year old). I desparately need to find a way to understand how to do these before I get so far behind there will be no catching up. Thanks bunches and bunches
Click here to see answer by askmemath(368) |
Question 10424: Can you help me with these problems. I have been working on them all day.
Complete the order pairs sto that each is a solution to the given Linear equation.
y=2x+7
(a)(0,?)(b)(4,?)
3x-7y=30
(a)(3,?)(b)(?,3)
Thanks for taking time to look at and answer my question!!!
Click here to see answer by Earlsdon(6294) |
Question 11033: I'm trying to graph linear inequalities, i'm want to know that if i divide greater/less than AND equal to problem that is negative do i flip the sign to being opposite of the orginal sign?
ex if -2y >or= -x+4...i divide both side by -2, and i'm wanting to know if it becomes y or= 1/2x-2
Click here to see answer by longjonsilver(2297)  |
Question 11280: A videocassette manufacturer has determined that its weekly cost equation is C = 2000 + 10x, where x is the number of cassettes produced and sold each week. If the cassettes are sold for $14 to distributors, how many must be sold each week for the manufacturer to break even?
Click here to see answer by askmemath(368) |
Question 11452: How do you solve an equation that is set up like this 3/4 (x-5)= -12. I have tried multipling by what I believe is the LCD 4, I have tried dividing by 4/3. I still cannot get the right answer. Please help!
Click here to see answer by usyim88hk(158) |
Question 11799: the question says "state the slope of a line parallel to the line passing through (-1,-1) and (3,2) then state the slope of a line perpendicular to it. now what i did is plot (-1,-1) and (3,2) but i dont know what to do from there. im stuck. i do know the formula to the slope but i dont know if i should use that because it wont tell me the slope of the line parallel or perpendicular to it. or will it? thank you so much for all your help
Click here to see answer by Earlsdon(6294) |
Question 11838: 3a-1/a^2+4a+4 - 3/a^2+2a = 3/a
this is a problem from my homework that is asking me to simply solve the equation. i don't know where or how to start to get the correct answer of
a = -9/8
any help with this would be greatly appreciated.
thanks
Click here to see answer by longjonsilver(2297) |
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