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

Tutors Answer Your Questions about Linear-systems (FREE)

Question 59814: Please help me :(
Is 7 a solution to the equation 4-x=3
Thank you.
Click here to see answer by uma(370)

Question 59813: Please help me :(
2(x-3)=-6
Thank you.
Click here to see answer by uma(370)

Question 59811: I cannot figrue out this word problem help please!!
Mr. Adams buys a bag or apples and a bag of pears for a total of $14. There are eight pounds of fruit in all. The apples cost $1.50 per pound, and the pears cost $2.30 per pound. How many pounds of pears did he buy??
Click here to see answer by uma(370)

Question 59810: Tell whether or not (-1,-5) is a solution of the system of inequalities
x + 2y < -12
and
3x - y > or equal to -2
Click here to see answer by uma(370)

Question 59808: Use Elimination to solve

and

Click here to see answer by joyofmath(189)

Question 59812: State whether the system is consistent and independent, consistent and dependent, or inconsistent. Tell why.
system is 2y + 4x = 8
and
y + 2x = 1

Click here to see answer by askmemath(368)

Question 59807: Please help solve the following :
Tell whether or not (2,3) is a solution of the system
2x-3y<0 and x + y > 4
Click here to see answer by joyofmath(189)

Question 59850: Solve the folowing system.
x - y = 1
x + y = 1
Click here to see answer by funmath(2933)

Question 59852: Solve by elimination:
2x+3y=21
5x-2y=-14
Click here to see answer by funmath(2933)

Question 59948: you are buyning two types of clothing to sell in your clothing store: t-shirts and sweatshirts. you have $1250 in your budget to spend on purchasing the clothing, and you wantto buy no more than 100 t-shirts and sweatshirts. one t-shirt cost $8 and one sweatshirt costs $15.
let x be the number of t-shits and let y be the number od sweatshits you are buying. Write a system of inequalities for the possible number of t-shirts ans sweat shirts you can buy.
Click here to see answer by stanbon(75887)

Question 59955: How do I find the solution set, given the replacement set:
5x + 2y = 5 [(2, -2), (2, -7), (5, -4), (3, -5)}
Click here to see answer by praseena(37)

Question 59946: YOU HAVE 9 FRIENDS WHO HAVE DECIDED TO TAKE A FEW DAYS TO GO CAMPING IN PENNSYLAVNIA'S ALLEGHENY NATONAL FOREST. YOU ARE PALNING A RECREATIONAL BYDGET OF $50 PER DAY FOR ACTIVITIES. ONE OF THE DAYS YOU WILL RENT CANOES AND TUBES TO EXPLORE THE CLARON RIVER. TUBE RENTALS COST $6.95, AND THE COST TO RENT THE CANOE IS $10.95 FOR THREE HOURS. EACH INDIVIDUAL WIL NEE A TUBE, BUT CANOES HOLD UP TO 3 INDIVIDUALS. IN ORDER TO BUDGET FOR YOUR DAY ON THE RIVER, CONSIDER THE FOLLOWING QUESTIONS.
WRITE AN EQUATION TO SHOW HOW MANY TUBES t AND CANOES c YOU WOULD NEED TO ACCOMMODATE YOUR GROUP.
Click here to see answer by 3rdegreeburn(1)

Question 59972: Please help I'm stuck!
State whether the system is consistent and independent, consistent and dependent or inconsistent.
2x - y = -7
x + y = 4
Click here to see answer by funmath(2933)

Question 59979: Please show me the graph for the equations: Solve each system of equation by graphing.
Y = 2x-4 my points are X and Y (0, -4), (3, 2), (5, 6)
y = -4 X + 2 my points are X and Y (0, 2), (3, 10), (2, -6)
Click here to see answer by funmath(2933)

Question 59830: Solve the system of equations by substitution
y = x^2 + 2x - 2
and
y = 3x + 4

Click here to see answer by ankor@dixie-net.com(22740)

Question 60038: I need help in learning how to solve by graphing and getting the solution such as 2-y=4
2x-y=6
Click here to see answer by tutorcecilia(2152)

Question 60064: y= -2(x^2+10x+29)
I know you can't factor it from here, and i also know i need to plug it into the "Quadratic Formula" i just don't know what the formula is.. Can anyone help me.
Click here to see answer by stanbon(75887)

Question 60133: To Whomever can assist, Thank you!
This has to do with the elimination by addition method and I'm unsure of how to solve for the system.
x - 2y = -12
2x + 9y = 2
Click here to see answer by funmath(2933)

Question 60143: how to find the "y"..??
x=-6
y=-2/3x+1
Click here to see answer by funmath(2933)

Question 60144: To Whomever can assist, Thank you!
I need to use either the substitution method or the elimination by addition method to solve the system, whichever seems more appropriate.

5x - 2y = 1
10x - 4y = 7
Click here to see answer by funmath(2933)

Question 60176: Can someone help me.
I need to solve the system by addition or substitution:

3x - 4y = 8
6x - 2y = 10
Thanks,
Lisa
Click here to see answer by chitra(359)

Question 60195: Can someone help me solve this problem?
I need to solve the system by addition:
5x - 3y = 13
4x - 3y = 11
Thank you,
Sher
Click here to see answer by funmath(2933)

Question 60195: Can someone help me solve this problem?
I need to solve the system by addition:
5x - 3y = 13
4x - 3y = 11
Thank you,
Sher
Click here to see answer by luanaoh(1)

Question 60221: I need your help to solve for X & Y using the addition method.
4x-5y=7
-4x+5y=7
Click here to see answer by funmath(2933)

Question 60209: A company pays 15,40 euro/ hour during the daytime and 19,60 euro/hour during night time.A man has got 852,60 euro after his work of a certain time during daytime and a certain time during night time. If he changes his night time with that of the day time he will be recieved 25,20 euro less. Calculate how many hors he worked during daytime and night time ?
Click here to see answer by checkley71(8403)

Question 60262: Can you please break down the steps to this problem. It's not in the text book it's for homework. I am having problems with it and i do not want to fail my next test.the problem is (Eight times the difference of 5 and a number gives 152. find the number
Click here to see answer by funmath(2933)

Question 60148: I am confused on how to do these kind of problems. The same with chapter 3 Section 3 I am not sure how to solve using substitution and eliminations
Click here to see answer by checkley71(8403)

Question 60370: Geometry.
The length of a rectangle is 2 in. more than twice its width. If the
perimeter of the rectangle is 34 in., find the dimensions of the rectangle.
Click here to see answer by checkley71(8403)

Question 60362: Solve by substitution
8x-4y=16
y=2x-4
Click here to see answer by checkley71(8403)

Question 60419: add or substitute this problem I do not know how or which to do Can you help? 10x+2y=7 y=5x+3
Click here to see answer by smik(40)

Question 60419: add or substitute this problem I do not know how or which to do Can you help? 10x+2y=7 y=5x+3
Click here to see answer by praseena(37)

Question 60339: 1b This is the order of operation problem 12-2[15-3(3(4TH POWER)-2(4TH POWER)*3)} please show me how this is solve. thanks!!!
Click here to see answer by tutorcecilia(2152)

Question 60361: Solve each of the following systems by substitution.
5x-2y=-5
y-5x=3

Click here to see answer by tutorcecilia(2152)

Question 60487: Instructions: Solve each system by the substitution method.
What is the solution for 5x+2y=-1
2x-y=-13
Click here to see answer by kayeith(17)

Question 58523: 19. x/6-2/9=-5/12
37. 4/5x-(x+3/2)=1/4(x-1/3)
39. 1/3x+5(1/9x-4)=8
please help me solve these problems i am having problems. thanks!!!
Click here to see answer by batgolds(1)

Question 60618: Joe has been collecting dimes and quarters all year. Now he wants to buy a present for his wife, so he opens his piggy bank. He has 479 coins. When the bank puts them through its counting machine, it tells him he has $72.50. How many dimes and how many quarters does he have?
Click here to see answer by uma(370)

Question 60616: Solve for x and y
6x-3y=9
5x+2y=-15
Click here to see answer by susie(3)

Question 60631: Solve the system of equations
y = 2x - 10 and x - y = 7
Click here to see answer by uma(370)

Question 60619: The airline distance from Manchester, NH to Orange County, California is 3122 miles. Schedule time westbound (against prevailing wind) is 5 hours 12 minutes (5.2 hours). Eastbound (with tailwind) the schedule time is 3 hours and 54 minutes (3.9 hours). What is the speed of the aircraft when there is no wind, and what is the speed of the prevailing wind? (round your anwser to whole miles per hour)
Click here to see answer by josmiceli(19441)

Question 60617: One number is 3 units larger than twice another number. If their sum is zero, find the two numbers?
Click here to see answer by ankor@dixie-net.com(22740)

Question 60700: In the equation x/2 + y/3 = 1, how do you find the x and y intercepts?
Click here to see answer by funmath(2933)

Question 60711: a) 4x^2-11x+6
b) y^2-11y+28
Click here to see answer by GANNU0716(2)

Question 60734: Hi I am trying to figure out why I keep coming up with a (-2) for x. My book says the answer is a positive 2. Can someone please help me. Thanks.
p.s. I used the elimination method
3x=5y+11
2x=6y+2
Click here to see answer by josmiceli(19441)

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