Tutors Answer Your Questions about Linear-equations (FREE)
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 34260: 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.
Click here to see answer by checkley71(8403) |
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(75887) |
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(75887) |
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 34630: 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
1999-86,047
Click here to see answer by checkley71(8403) |
Question 34634: 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. Angela
Click here to see answer by checkley71(8403) |
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(8403) |
Question 34795: 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
Click here to see answer by stanbon(75887) |
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(6294) |
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(6294) |
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) |
Question 34632: Question; Write and equation (a) in standard form and (b) in slope-intercept form. # 38. Through(-2,0), perpendicular to 8x-3y=7
I really don't understand what "Through" means? I don't understand the equation either. But I really don't get through. Thanks so very much!
Click here to see answer by kietra(57) |
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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 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