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Tutors Answer Your Questions about Linear-equations (FREE)
Question 34045This question is from textbook 
: I entered the wrong email address, so if this one's probably out in cyberspace somewhere. So here it is again:
Can someone give me a step by step of how to solve this?
-27.23+x=9.77This question is from textbook
Click here to see answer by ichudov(404)   |
Question 34297This question is from textbook Algebra 1
: My problem is (-5, -4) 2x + 3y = -1 i have to write an equation in slope-intercept form of the line that passes through the given point and is paralle to ther graph of each equation. these make no sense, I've tried tofigure it out a few times. NO LUCK help pleaseThis question is from textbook Algebra 1
Click here to see answer by venugopalramana(3286)  |
Question 34255This question is from textbook
: I'm trying to solve a word problem that involves translating it into an algebraic sentance-then solve it. So I found the equation to be 5-3(n)=43. Now I need to solve the equation and I'm stuck.This question is from textbook
Click here to see answer by benni1013(141)  |
Question 34430: For the systems of linear equations in this question
- Determine how many solutions exist
- Use either elimination or substitution to find the solutions (if any)
- Graph the two lines, labeling the x-intercepts, y-intercepts, and points of intersection
x + y = 3 and y = x + 3
Click here to see answer by venugopalramana(3286) |
Question 34429: For the systems of linear equations in this question
- Determine how many solutions exist
- Use either elimination or substitution to find the solutions (if any)
- Graph the two lines, labeling the x-intercepts, y-intercepts, and points of intersection
y = 2x + 3 and y = -x - 4
Click here to see answer by venugopalramana(3286) |
Question 34428: For the systems of linear equations in this question
- Determine how many solutions exist
- Use either elimination or substitution to find the solutions (if any)
- Graph the two lines, labeling the x-intercepts, y-intercepts, and points of intersection
2x + 3y = 8 and 3x + 2y = 7
Click here to see answer by venugopalramana(3286) |
Question 34427: For the systems of linear equations in question 1
- Determine how many solutions exist
- Use either elimination or substitution to find the solutions (if any)
- Graph the two lines, labeling the x-intercepts, y-intercepts, and points of intersection
1. (8 points) y = 2x + 3 and y = -x - 4
Click here to see answer by venugopalramana(3286) |
Question 34368: - Determine how many solutions exist
- Use either elimination or substitution to find the solutions (if any)
- Graph the two lines, labeling the x-intercepts, y-intercepts, and points of intersection
(8 points) x + y = 3 and y = x + 3
Click here to see answer by venugopalramana(3286) |
Question 34367: - Determine how many solutions exist
- Use either elimination or substitution to find the solutions (if any)
- Graph the two lines, labeling the x-intercepts, y-intercepts, and points of intersection
(8 points) 2x + 3y = 8 and 3x + 2y = 7
Click here to see answer by venugopalramana(3286) |
Question 34366: - Determine how many solutions exist
- Use either elimination or substitution to find the solutions (if any)
- Graph the two lines, labeling the x-intercepts, y-intercepts, and points of intersection
1. (8 points) y = 2x + 3 and y = -x - 4
Click here to see answer by venugopalramana(3286) |
Question 34260This question is from textbook
: In this word problem I got the equation 6(C+1800). I have to find C-that's if the equation is even right. The problem reads: The Alpine Valley Ski Shop sells both cross-country and downhill skis. During a year they sell six times as many dowmhill skis as cross country skis. Determine the number of pairs of cross-country skis sold if the difference in the number of pairs of downhill and cross-country skis sold is 1800.This question is from textbook
Click here to see answer by checkley71(8405) |
Question 34571: On the first day of school, the percentage of boys in a particular class is 60%. During the school year, six girls move away, and are replaced in the class by six boys; this makes the class roster 75% boys. Find the number of boys and girls in the class on the first day of school.
Click here to see answer by stanbon(26297) |
Question 34602: For the system of linear equations in questions 1
- Determine how many solutions exist
- Use either elimination or substitution to find the solutions (if any)
- Graph the two lines, labeling the x-intercepts, y-intercepts, and points of intersection
3x + 7y = 3 and 12x + 28y = 16
Click here to see answer by stanbon(26297) |
Question 34597: This is a problem my mom gave me and it is driving me crazy. I am in the 5th grade and in an advanced math class, but I cannot get this. The problem is to write an algebraic expression that will let me describe a set of data. The data when plotted on a grid has one row of 3 tiles then three rows of 5 tiles then one row of 3 tiles and then three rows of 5 tiles and keps on repeating. So the data in two colums (column one being tiles in next row and column two being the total tiles 'so far) is as follows:
# tiles (Column 1) Total So Far (Column 2)
3 3
5 8
5 13
5 18
3 21
5 26
5 31
5 36
3 39
Can you please help me write an algebraic expression to describe the above data?
Thanks
Click here to see answer by venugopalramana(3286) |
Question 34631: I have 2 questions
a/ A is nxn matrix and v1,v2,...,vn be linearly independent in Rn. What must be true about A for Av1, Av2,..., Av3 to be linearly independent?
b/ Must a basis of Pn contain a polynomial of degree K for each k=0,1,...,n ? Justify your answer
Click here to see answer by venugopalramana(3286) |
Question 34630This question is from textbook College algebra
: I am having a problem understanding part A of question # 70. Directions; The table gives the number of cellular telephones subscribers (in thousands) from 1994 through 1999. Question for part A is; Find the change in subscribers for 1994-1995, 1995-1996 and so on.
The table reads as follows:
1994-24,134
1995-33,786
1996-44,043
1997-55,312
1998-69,209
1999-86,047This question is from textbook College algebra
Click here to see answer by checkley71(8405) |
Question 34634This question is from textbook College algebra
: I ask this question yesterday and I didn't get a response. I thought I would try today and see what happens. Thanks so much for your time. Question; Find the slope of the line and sketch the graph. #48. -4y=5x
I came up with 0-(4-)/5-0 = 4/5 or (0,4), (5,0) but I am not sure I did it right. Thanks so much for your time. I really appericate it. AngelaThis question is from textbook College algebra
Click here to see answer by checkley71(8405) |
Question 34570: In a survey, 20 voters were asked their age. The results are summarized in the frequency below. Construct a histogram.
Age of voters # of voters
20 - 29............ 5
30 - 39............ 5
40 - 49............ 6
50 - 59............ 0
60 - 69............ 4
Click here to see answer by checkley71(8405) |
Question 34795This question is from textbook Prentice Hall Mathematics: Course 3
: Hi,
I need to graph this problem:y=x+2
y=2x+1
I know that the solution is (1,3). Its just every time that I try to graph the equation, my lines dont cross correctly. So that you are not confused with what I am talking about, I am supposed to be solving linear systems by graphing. Please, if you can email this to me before 4/25/06 since it is 4/24/06 that would be great! Thank you and have a great day!
Sincerely,
a student working for 1st honors this marking period This question is from textbook Prentice Hall Mathematics: Course 3
Click here to see answer by stanbon(26297) |
Question 34801: Sorry, typed the e-mail wrong.
Question: Determine the equation of each line. Write the answer in standard form using only intergers as the coefficient.
#36 The line through (-2,0) with slope -3/4.
I tried. y=mx+b
y=-3/4x+-2/0
Click here to see answer by Earlsdon(4900) |
Question 34797: This is from a worksheet from Glencoe Algebra 1.
Mr Adim's science class launched a toy rocket from ground level with an initial upward velocity of 60 feet per second. The height h of the rocket in feet above the ground after t seconds is modeled by the equation
 .How long was the rocket in the air before it returned to the ground?
Click here to see answer by longjonsilver(2297)  |
Question 34797: This is from a worksheet from Glencoe Algebra 1.
Mr Adim's science class launched a toy rocket from ground level with an initial upward velocity of 60 feet per second. The height h of the rocket in feet above the ground after t seconds is modeled by the equation
.How long was the rocket in the air before it returned to the ground?
Click here to see answer by Earlsdon(4900) |
Question 34859: THe question is "A chemical factory makes two different chemicals A and B and can sell all that it is able to produce. It has orders for at least 200 kg of A and 100 kg of B, but can produce at most a total of 700 kg of the chemicals due to limited resources. If the profit on A is $300 per kg and $400 per kg on B, how many kg of each should be produced in order to maximise profit? I need to know what the constraints are in this qestion plz
Click here to see answer by venugopalramana(3286) |
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