Questions on Algebra: Systems of Linear Equations answered by real tutors!

Tutors Answer Your Questions about Linear-systems (FREE)

Question 206059: Solve each system by addition.As part of your answer indicate whether the equation are independent, dependent, or inconsistent.
x-y=3
-6x+6y=17
Click here to see answer by jim_thompson5910(28476)

Question 206062: if trains a and b are travelin gthe same direction on parallel tracks. train a is traveling at 100 mph and train b is traveling 120 mph. train a passes a station at 9:20 am if train b passes the same station at 9:32 amd at what time will train b catch up to train A
Click here to see answer by ankor@dixie-net.com(15624)

Question 206061: solve the following system of equations
x +3y =9 (1)
x=5-3y (2)
Click here to see answer by ankor@dixie-net.com(15624)

Question 206061: solve the following system of equations
x +3y =9 (1)
x=5-3y (2)
Click here to see answer by checkley77(12569)

Question 206096: How do you solve a linear equations with Gaussian elimination?
x+ y + Z =9
2X- 3y +4z =7
X- 4y + 3Z =-2
Click here to see answer by Edwin McCravy(8879)

Question 206275: Given: P1 (2,-3) & P2 (3,2), Construct the slope-intercept of the line.
Click here to see answer by Targetweek(62)

Question 206288: y = x + 4
3y - 5x= 6 Solve by substitution
Click here to see answer by scott8148(6628)

Question 206288: y = x + 4
3y - 5x= 6 Solve by substitution
Click here to see answer by checkley77(12569)

Question 206286: solve by substitution y = -3x +19
y = 2x-1
Click here to see answer by scott8148(6628)

Question 206287: y = -4x - 7 is asking me to slove by substitution and determine whether
y = 3x the equation is independent, dependent or inconsistent
Click here to see answer by stanbon(57219)

Question 206456: Problem # 70
x + 3y = 2
-x + y = 1
Problem # 36
y = -3x + 19
y = 2x - 1
Problem # 24
4x + 5y = -2
4y - x = 11
Click here to see answer by jim_thompson5910(28476)

Question 206546: Are linear equations and linear functions the same? Why or why not?
Click here to see answer by jim_thompson5910(28476)

Question 206014: 3/4=1-3x-2/x+1
really means 3/4 = 1 - (3x-2)/(x+1) ?
Click here to see answer by mickclns(59)

Question 206601: solve by substitution
x + 3y = 2
-x + y = 1
Click here to see answer by Marth(57)

Question 206603: solve by system of addition
2x = 2 - y
3x + y = -1
Click here to see answer by checkley77(12569)

Question 206602: solve by system of addition 3x + 5y = -11
x - 2y = 11
Click here to see answer by checkley77(12569)

Question 206600: solve by substitution 2x - y = 4
2x - y = 3

Click here to see answer by Marth(57)

Question 206604: solve by system of addition and determine if the equation is independent , dependent or inconsistent
x - y = 3
-6x + 6y =17
Click here to see answer by jim_thompson5910(28476)

Question 206606: solve by system of addition
3x - 2.5y =7.125
2.5x - 3Y =7.3125
Click here to see answer by checkley77(12569)

Question 206625: what are the intercepts of the equation 18x-9y+3z=18?
Click here to see answer by RAY100(1637)

Question 206724: Can you help me in translating this statement into equation? "A man has three sums of money invested, one at 4%, one at 5% and one at 3%. His total yearly income from the three investments is P1400. The last investment yields 100 more per year than the other two combined. If he could receive 1% more on each investment, his annual income would be increased by P400. How much does he invested at each rate?
Click here to see answer by stanbon(57219)

Question 206714: 2^x * 6^y = 24
2^2x * 3^y = 48
find the value of x and y?
Click here to see answer by vleith(2825)

Question 203395: Solve.
09x+5≤1.7x-2
-------------
0.9≤1.7x-7
0.9-1.7≤1.7x-1.7x-7
-0.8x≤-7
x≥8.75
Please tell me if I had a right answer?
Thank you very much!
Click here to see answer by Alan3354(30959)

Question 206944: Solve the system of equations by any method.
7x + 15y = 32
x = 3y + 20

Click here to see answer by mmr(:(1)

Question 206987: A truck can be rented from Basic Rental for $50 per day plus $0.20 per mile. Roadrunners charges $20 per day plus $0.50 per mile to rent the same truck. How many miles must be driven in a day to make the rental cost for Basic Rental a better deal than that for Roadrunners?

Click here to see answer by checkley77(12569)

Question 206991: You need to choose between two telephone plans for local calls. Plan A charges $25 per month for unlimited calls. Plan B has a monthly fee of $13 with a charge of $0.06 per local call. How many local telephone calls in a month make Plan A the better deal?

Click here to see answer by checkley77(12569)

Question 206990: You need to choose between two telephone plans for local calls. Plan A charges $25 per month for unlimited calls. Plan B has a monthly fee of $13 with a charge of $0.06 per local call. How many local telephone calls in a month make Plan A the better deal?

Click here to see answer by checkley77(12569)

Question 207021: Solve the following system of equations. What is the value of x?
2x + 3y = 7
5x + 4y = 7

Click here to see answer by jim_thompson5910(28476)

Question 206985: A truck can be rented from Basic Rental for $50 per day plus $0.20 per mile. Roadrunners charges $20 per day plus $0.50 per mile to rent the same truck. How many miles must be driven in a day to make the rental cost for Basic Rental a better deal than that for Roadrunners?

Click here to see answer by rfer(12644)

Question 207121: Solve the system by the substitution method. Determine whether the equations are independent, dependent, or inconsistent.
3y – x = 5
-x + 2y = -4

Click here to see answer by jim_thompson5910(28476)

Question 207113: Solve the system by the substitution method. Determine whether the equations are independent, dependent, or inconsistent.
-3x + y = 4
2x – 3y = 9

Click here to see answer by jim_thompson5910(28476)

Question 207149: Solve the system by the addition method. Determine whether the equations are independent, dependent, or inconsistent.
3x - 2y = -7
x – 5y = 2

Click here to see answer by jim_thompson5910(28476)

Question 207161: Write a system of two equations in two unknowns. Solve the system by using the substitution method. « The length of a rectangular field is 12 feet longer than the width. If the perimeter is 144 feet, then what are the length and width
Click here to see answer by jojo14344(1512)

Question 207160: Write a system of two equations in two unknowns. Solve the system by using the substitution method. « The length of a rectangular field is 12 feet longer than the width. If the perimeter is 144 feet, then what are the length and width
Click here to see answer by jojo14344(1512)

Question 207165: Find the reference angles q for the angles given below. Find the quadrants in which the angles lie. In addition, show all the steps for deriving the answer.
q = 50 degrees
q = 120 degrees
q = 6p/7
q = 3.3
q = 300 degrees
q = -145 degrees
Click here to see answer by jim_thompson5910(28476)

Question 207166: 0. given f(x) =8x -2 and g(x) = 2x -3 find f-g
1. given f(x) =5x + 4 and g (x) =3x-8 find f.g

2. given f(x) +2 -2x and g(x) = -6 +2, find f+g

3. find the distance between the pair of points (-1, -4) and (-5, -7)

4. find the distance between the pair of points (-2, -6) and (7, -3)

5. find the midpoint of the line segment with the given and points (2,1) and (6,8)

6. find the center and radius of a circle given the following equation of the circle x^2 + y^2 = 100

7. given f(x) = -3x + 2 and g(x) = 2x +9, find (gof)(x)

8. given f(x) = 5x +7 and g(x) = 5x -1 find (fog)(x)

9. write the standard form of the equation of the circle with the given center(-2, -4) and the radius 6.
Click here to see answer by solver91311(16868)

Question 207151: Write a system of two equations in two unknowns. Solve the system by using the substitution method. « The length of a rectangular field is 12 feet longer than the width. If the perimeter is 144 feet, then what are the length and width
Click here to see answer by rfer(12644)

Question 207193: For each line, use the given conditions to write an equation in the point-slope form and the slope-intercept form.
Slope = 4, passing through (1, 3)
Slope = 8, passing through (4, –1)
Slope = –5, passing through (–4, –2)
Slope = –2, passing through (0, –3)
Click here to see answer by Alan3354(30959)

Question 207309: Find the missing values that solve this equation.
y = 3x

(0, ____) (-1,____) (7,____)
Click here to see answer by RAY100(1637)

Question 207593: Solve each system using substitution
------------------------------------
1.the sum of two numbers is 27. one number is 3 more than the other. find the numbers
2.find the two numbers whose sum is 58 and whose difference is 16.
3.the difference between two numbers is 18. twice the smaller number plus 3 times the larger is 74. what are the numbers?
Click here to see answer by mickclns(59)

Question 207645: solve ALL using the substitution method
x-3y=7
-3x+16y=28

y-2x=0
3x+7y=17

r-2s=0
4r-3s=15

3b+2a=2
-2b+a=8
Click here to see answer by jim_thompson5910(28476)

Question 207645: solve ALL using the substitution method
x-3y=7
-3x+16y=28

y-2x=0
3x+7y=17

r-2s=0
4r-3s=15

3b+2a=2
-2b+a=8
Click here to see answer by rfer(12644)

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