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Tutors Answer Your Questions about Systems-of-equations (FREE)
Question 193398: ``Before, solving the problem, I just want to give you the heads up. It's
Systems of Equation: Application. I can't find the specific title to relate
with my story problems. My chapter in the book is Chapter Eight, Solving Systems by Substiution, Additional. Hope it helps!
*The difference of two integers is 20. The larger is 4 less than 3 times the smaller. Find the two integers.*
Click here to see answer by nerdybill(2446)   |
Question 193396: ``Before, solving the problem, I just want to give you the heads up. It's
Systems of Equation: Application. I can't find the specific title to relate
with my story problems. My chapter in the book is Chapter Eight, Solving Systems by Substiution, Additional. Hope it helps!
*Roberto decided to invest 20,000 in two accounts. One fo the accounts pays 5% interest and the other pays 8% interest. The interest he earned in one year was $1210. How much did he have invested in each account?*
Click here to see answer by Mathtut(3670)  |
Question 193399: ``Before, solving the problem, I just want to give you the heads up. It's
Systems of Equation: Application. I can't find the specific title to relate
with my story problems. My chapter in the book is Chapter Eight, Solving Systems by Substiution, Additional. Hope it helps!
*Angles A and B are complementary. Angle B is 18 greater than angle A. Find the measures of the two angles.*
Click here to see answer by Mathtut(3670) |
Question 193395: ``Before, solving the problem, I just want to give you the heads up. It's
Systems of Equation: Application. I can't find the specific title to relate
with my story problems. My chapter in the book is Chapter Eight, Solving Systems by Substiution, Additional. Hope it helps!
*Two families attend the town's ice cream social every summer. This year one family piad $9.75 for 3 adult tickets and 5 children's tickets. The other family paid $10.75 for 5 adult tickets and 1 child's ticket. Find the price of a child's ticket.*
Click here to see answer by Mathtut(3670) |
Question 193397: ``Before, solving the problem, I just want to give you the heads up. It's
Systems of Equation: Application. I can't find the specific title to relate
with my story problems. My chapter in the book is Chapter Eight, Solving Systems by Substiution, Additional. Hope it helps!
*Two numbers are such that twice the first and 3 times the second is 31. When 4 times the second number is subtracted from 3 times the first number the result is 4. Find the two numbers.*
Click here to see answer by Earlsdon(4900) |
Question 194088This question is from textbook
: I have a problem where I am supposed to write each rational expression in lowest terms after factoring. The problem is:
m^2 - n^2 - 4m - 4n
--------------------
2m - 2n - 8
The back of the book gives an answer of m +n but I can't figure out how to get it ------
2
I can get as far as
(m - n)(m + n)-4(m + n)
-----------------------
2(m - n - 4)
and I do not know how to simplify further
Thanks in advance for the help and I apologize if I submitted this in the wrong place
JoshuaThis question is from textbook
Click here to see answer by Earlsdon(4900) |
Question 194419: The manager of a discount store received two clothing shipments. The first shipment contained 10 sweaters and 20 jackets and cost $800. The second shipment, at the same prices, contained 5 sweaters and 15 jackets and costs $550. Find the cost of 1 jacket
Click here to see answer by checkley77(7049) |
Question 194419: The manager of a discount store received two clothing shipments. The first shipment contained 10 sweaters and 20 jackets and cost $800. The second shipment, at the same prices, contained 5 sweaters and 15 jackets and costs $550. Find the cost of 1 jacket
Click here to see answer by doukungfoo(195)  |
Question 197810: Kathy has 5 liters of 32% acid solution and she also has a large amount of a 26% acid solution. How many liters of the 26% solution can Kathy mix with the 5 liters of 32% solution in order to produce a 50% acid solution? I know that there is no solution due to the fact that combining solutions of 26% and 32% will never create a solution of greater concentration then 32% however I need to know how to set up the system of equations to solve this problem regardless of the outcome. What are the two equations?
Click here to see answer by stanbon(26273) |
Question 198341: Solve the system of equations using the addition (elimination) method.
If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is "no solution" or "infinitely many solutions" and state how you arrived at that conclusion.
Click here to see answer by stanbon(26273) |
Question 200095: Hi, thanks for your time here is the question-
Teresa Sanchez sells two sizes of outdoor doghouses: large and small. The
large size requires 12 board-feet of lumber and takes 3 hours to build. The
small size requires 8 board-feet of lumber and takes 1 hour to build. Teresa
can use 48 board-feet of lumber each day and plans to spend at most 9 hours
per day building dog houses.
3. Model the situation above. Your algebraic model should be a system of
four inequalities. (Remember that Teresa cannot build a negative number
of dog houses.)
We were thinking that two of the inequalities would be 2l + 8s less or equal to 48 and 3l + s less or equal to 9 -but have no idea what the other two would be
Click here to see answer by ankor@dixie-net.com(6693)  |
Question 200861: this did not come from a book but from a work sheet my teacher made
R + S + T = 5 ;
2R - 7S + 3T = 13;
3R - 2S + 4T = -6
i am supposed to solve for all three variables but i cant seem to fid an answer i have gone through half a notebook trying didferent methods help please !!!!!
Click here to see answer by stanbon(26273) |
Question 201016: If there is anyone that can help me solve this or I should say these problems it would be a huge help I have a exam that I'm studying for and cant spend any more time tring to get the solutions. Thank you to anyone nice enough to help me out!
#1a)The sum of the squares of two numbers is 128. The product of the numbers is 64. Find the numbers? (answer with a exact solution and in ordered pairs)
#1b) The difference between the squares of two numbers is 3. Twice the square of the first number increased by the square of the second number is 9. Find the numbers? (please put your solutions in the form of an ordered pair(s)
#1c) A 150 ffet of fence is available to enclose a 1125 square foot region in the shape of adjoining squares. With the sides of length X and Y. The big square has sides of length X and the small square has sides of length Y. Find X and Y?
Click here to see answer by jim_thompson5910(13794) |
Question 201190: Hey guys and girls, I have a bit of a problem here I have 50 home work questions that I have to submit by mid-night and I'm in a bit over my head at this point with both my summer classes and there finals tonight and tomorrow. If any body can help me with a few of these problems I would be very, very greatfull!I have to solve the follwing A,{Y=^X2+4X-5 & Y=-X^2+12X-11] B, {X^2+Y^=193 &X-Y=5} C, {X*Y=45 & 3X-Y=-6} D,{X*Y=8 & X^2+Y^2=65} E, {X+Y=-8 & (X-2)^2+(Y+7)^2=5}
I know this is not normal but I have to be at school to take one of my finals and I,m not too good at the substitution method these questions would probabley take me 2 hours to get the correct solutions not to mention the other 46 problems I have to solve! So if anybody is generous enough to help me with these solutions THANK YOU!!! fyi summer sessions are horrible....
Click here to see answer by jim_thompson5910(13794) |
Question 201190: Hey guys and girls, I have a bit of a problem here I have 50 home work questions that I have to submit by mid-night and I'm in a bit over my head at this point with both my summer classes and there finals tonight and tomorrow. If any body can help me with a few of these problems I would be very, very greatfull!I have to solve the follwing A,{Y=^X2+4X-5 & Y=-X^2+12X-11] B, {X^2+Y^=193 &X-Y=5} C, {X*Y=45 & 3X-Y=-6} D,{X*Y=8 & X^2+Y^2=65} E, {X+Y=-8 & (X-2)^2+(Y+7)^2=5}
I know this is not normal but I have to be at school to take one of my finals and I,m not too good at the substitution method these questions would probabley take me 2 hours to get the correct solutions not to mention the other 46 problems I have to solve! So if anybody is generous enough to help me with these solutions THANK YOU!!! fyi summer sessions are horrible....
Click here to see answer by Alan3354(6079)  |
Question 201237: The sum of three numbers is 15, the sum of twice the first number,4 times the second number and five times the the third number is 49. the difference between 4 times the first number and the second number is 23. find the three numbers in there order???
Click here to see answer by Alan3354(6079) |
Question 202020: Hello! Could you give e chanse to have the solution of this problem?
The different of two naural number is 9 and he different of their reciprocal is 9/190. Find the numbers.
This was my way which doesn't go on:
or
Since sqrt( 3037801 ) is not an integer number (it is a so called irrational number, not reducible to fractions like m/n), further reduction of this expression will not give you an integer result.
Click here to see answer by jim_thompson5910(13794) |
Question 202204: Need to double check my answer please:
Solve the system by the addition method:
4x + 8y = 6
3x – 8y = 7
7x = 13
/7 /7
x=13/7
4(13/7) +8y=6
52/7+8y=6
7(52/7) +7(8y) =7(6)
52+56y=42
-52 -52
56y -10
/56 /56
y=-5/28
(13/7,-5/28)
Click here to see answer by solver91311(5072)  |
Question 202205: Need to double-check this equation please:
Solve the system by the addition method:
(1/6) x + (1/4) y = -2
x – y = -6
12(1/6 x+1/4 y)=12(-2)
2x+3y= -24
3(x-y) = 3(-6)
3x-3y=-18
2x+3y=-24
5x =42
/5 /5
x= -42
-42/5-y= -6
+42/5 +42/5
-y= 12/5
/-y /-y
y= -12/5
Click here to see answer by solver91311(5072) |
Question 202223: Need to double check this equation please:
Write the following problem as a system of two equations in two unknowns. Solve the system using the substitution method:
The sum of two numbers is 2, and their difference is 26. Find the numbers.
x+y=2
x-y=26
x+y=2
-x -x
y= -x+2
x-(-x+2)=26
x+x-2=26
2x-2=26
+2 +2
2x=28
/2 /2
x=14
x+y=2
14+y=2
-14 -14
y=2-14
y= -12
The 2 numbers are: (14,-12)
Click here to see answer by solver91311(5072) |
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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
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