Tutors Answer Your Questions about Linear-systems (FREE)
Question 259764: some help here please, really confused.
The sum of three consecutive even integers is 72.
Write an equation you would use to find the integers.
x + (x + 1) + (x + 3) = 72
x + (x + 1) + (x + 2) = 72
4x = 72
x + (x + 2) + (x + 4) = 72
Click here to see answer by Alan3354(69443)   |
Question 259764: some help here please, really confused.
The sum of three consecutive even integers is 72.
Write an equation you would use to find the integers.
x + (x + 1) + (x + 3) = 72
x + (x + 1) + (x + 2) = 72
4x = 72
x + (x + 2) + (x + 4) = 72
Click here to see answer by unlockmath(1688)  |
Question 260097: hello I have got a question from my homework that states that i am a lab technician that needs to make 60ml of 32% nitric acid solution. The acid solutions available are 20% nitric acid solution and 40% nitric acid solution.How many milliliters of each solution should be mixed to make the 32% solution. I have read this question several times and don't know what they are asking me to do and i cannot understand how to get the solution. I hope you understand my question i have tried to make it very clear and am sorry if this is considered -dump your whole homework in one question- because i really am not trying to i just don't understand the question. Hope you answer the question and thank you in advance.
Click here to see answer by checkley77(12844) |
Question 260121: Please look over the problem I did and see if it is correct and if not help me to correct it. I am writing an equation of the line that is parallel to the given line and passes through the given point.
Y=-2X + 3 (4,4)
My answer is Y=-2X+12
Click here to see answer by stanbon(75887) |
Question 259977: let y=(-7,-6,-2), u1=(6,-6,1), u2=(-4,2,36). Compute the distance d from y to the plane in R3, spanned by u1 and u2. The distance d is supposed to be the shortest distance and I understand that to be the length from y to where it is perpendicular to the plane. The confusion is with a method that uses a normal vector to the plane and is that now considered the projection of y onto the normal vector such that I am now looking for the parallel component of y on a? Can you provide a visual model perhaps?
Click here to see answer by jim_thompson5910(35256) |
Question 260168: #25 This question involves to find parallel and perpendicular lines.
Find the equation of the line containing the point (4,1) and perpendicular to the line y=-3x+4.
I believe I do y-y1=m(x-x1)
y-1=4(x-4)
y=4x-16+1
y=x-17/4
However, I know this is wrong. the answer is supposed to be y=1/3x-1/3. I have no idea what I need to do. Any help would be appreciated.
Click here to see answer by Alan3354(69443) |
Question 260439: I'm not sure if the topic I picked was the right one... But, The question on my Mid Term Review is... Write an equation in point slope form of the line that passes though points (-2,5) and (6,8). My question is, how would you solve this?
Click here to see answer by checkley77(12844) |
Question 260564: You are driving at a speed of 55 mph to yor sisters house. At 1 pm you are 150 miles from her house. Write an equation that models the distance from your sisters house in terms of the number of hours since 1 PM.
Click here to see answer by ilovemath(8) |
Question 260564: You are driving at a speed of 55 mph to yor sisters house. At 1 pm you are 150 miles from her house. Write an equation that models the distance from your sisters house in terms of the number of hours since 1 PM.
Click here to see answer by Alan3354(69443) |
Question 261738: suppose you can run 250meters per minute downhill and 180 meters per minute uphill. One day you run 1557 meters in 7.6 minutes always either uphill or downhill. Solve the linear system to find the number of meters you ran uphill and downhill.
Click here to see answer by Theo(13342)  |
Question 261776: You planted a 16 inch hemlock tree that grows at a rate of 4 inches per year. Then 5 years later you planted a 10inch blue spruce that grows at a rate of 6 inches per year. In how many years after you planted the hemlock tree will the two trees be the same height? How tall will the trees be?
Click here to see answer by williamson.family05(2) |
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