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

Tutors Answer Your Questions about Linear-systems (FREE)

Question 1074499: The answear is 42 and,x+y =42, but y or x is 17 more than the other
Click here to see answer by Fombitz(32388)

Question 1074583: 2y - 3x is greater than or equal to 6, 5y + 4x is greater than or equal to 4, y is less than or equal 0
Click here to see answer by ikleyn(52786)

Question 1074606: Can someone please show me the steps on how to do this, so I can understand how to do it?? Admission to a baseball game is $4.00 for general admission and $5.50 for reserves seats. The receipts were $5656.50 for 1296 paid admission. How many of each ticket were sold?
Click here to see answer by Fombitz(32388)

Question 1073996: 2x-3y+7z=-1,3x+z=6,x+2y-2z=-1
Click here to see answer by Fombitz(32388)

Question 1073996: 2x-3y+7z=-1,3x+z=6,x+2y-2z=-1
Click here to see answer by ikleyn(52786)

Question 1074234: Find a vector function that represents the curve of intersection of the paraboloid z=6x^2+3y^2 and the cylinder y=2x^2 Use the variable t for the parameter
Click here to see answer by Fombitz(32388)

Question 1074232: Find a vector function that represents the curve of intersection of the paraboloid z=6x^2+3y^2 and the cylinder y=2x^2. Use the variable t for the parameter.
r(t)=⟨t,r(t)=⟨t,

Click here to see answer by Fombitz(32388)

Question 1074763: x-2y=4
2x+y=3
x=____
y=____
Click here to see answer by Fombitz(32388)

Question 1074763: x-2y=4
2x+y=3
x=____
y=____
Click here to see answer by Alan3354(69443)

Question 1074770: Eight times a number plus five times another number is -13. The sum of the two numbers is 1. What are the numbers
Click here to see answer by Theo(13342)

Question 1074847: gunther invested $10,000 in two mutual funds. one of the funds rose 6% in one year , and the other rose9% in one year. if gunther's onvestment rose a total of $684 in one year , how much did he invest in each mutual fund?
Click here to see answer by addingup(3677)

Question 1074947: 3y-7=y+1 find what is y?

Click here to see answer by Alan3354(69443)

Question 1074980: Pkease help solve this problem : One pipe an fill a tank in 5 hours less than another. Together they
can fill the tank in 5 hours. How long would it take each alone to fill the tank ? Compute the answer
to two decimal places.
Click here to see answer by josgarithmetic(39617)

Question 1074981: Please help me solve this equation :One pipe can fill a tank in 5 hours less than another. Together they
can fill the tank in 5 hours. How long would it take each alone to fill the tank ? Compute the answer
to two decimal places.
Click here to see answer by ikleyn(52786)

Question 1075011: Addition method
2x+3y=-2
3x+y=-10
helenhanna6@gmail.com
Click here to see answer by Alan3354(69443)

Question 1075028: Solve the system of equations by graphing. (Simplify your answer completely. If the system is dependent, enter DEPENDENT. If the system is inconsistent, enter INCONSISTENT.)
y = x − 5
3x − 3y = 15
Click here to see answer by Boreal(15235)

Question 1075039: what is the y- coordinate in the solution for the system of linear equations below? -3x+2y=6 & 4x-y=2 a)-6 b)1 c)2 or d)6 I didn't understand what the question wanted me to look for so I tried finding two solutions to the problem and it didn't come out with any of the answers for the multiple choice.

Click here to see answer by ikleyn(52786)

Question 1075059: The value of K for which the system of linear equations
2x+y+2=0
X+ky+2z=0
X+y+2=0
Click here to see answer by Alan3354(69443)

Question 1075059: The value of K for which the system of linear equations
2x+y+2=0
X+ky+2z=0
X+y+2=0
Click here to see answer by KMST(5328)

Question 1075107: Solve by the addition method. (If there is no solution, enter NO SOLUTION. Use the parameters x and y as necessary.)
x + 5y=11
2x + 7y=13

Click here to see answer by Alan3354(69443)

Question 1075157: Please help me solve this problem :
Let M and N be the root of an equation x^2+ax+b=0 and
let O and P be the roots of x^2+cx+d=0. Express
(M-O)(N-O)(M-P)(N-P) in terms of the coefficients
a,b,c,d.
Click here to see answer by Edwin McCravy(20056)

Question 1075307:
Click here to see answer by Alan3354(69443)

Question 1075365: A child wanders slowly down a circular staircase from the top of a tower. With x,y,z in feet and the origin at the base of the tower, her position t minutes from the start is given by
x=15cost,y=15sint,z=120−5t.
t.
(a) How tall is the tower?
height =
ft
(b) When does the child reach the bottom?
time =
minutes
(c) What is her speed at time tt?
speed =
ft/min
(d) What is her acceleration at time tt?
acceleration =
ft/min2
Click here to see answer by jim_thompson5910(35256)

Question 1075637: X=5y-1
X+2y=13
Click here to see answer by josgarithmetic(39617)

Question 1075727: Find the slope of the tangent line to the ellipse x^2/9+y^2/4=1 at the point (x,y)
slope =?
Are there any points where the slope is not defined? (Enter them as comma-separated ordered-pairs, e.g., (1,3), (-2,5). Enter none if there are no such points.)
slope is undefined at =?
Click here to see answer by Alan3354(69443)

Question 1075732: Let
f(x)={−6x^2+2x for x<0,
f(x)={3x^2-2 for x⩾0.
According to the definition of the derivative, to compute f′(0), we need to compute the left-hand limit
limx→0− =?
, which is
undefined
,
and the right-hand limit
limx→0+?
, which is
0
.
We conclude that f′(0) is
undefined
.
Note: If a limit or derivative is undefined, enter 'undefined' as your answer.
Click here to see answer by Boreal(15235)

Question 1075825: Consider the function f(x)=2x^3+18x^2−42x+11,−7≤x≤2
Find the absolute minimum value of this function.
Answer:

Find the absolute maximum value of this function.
Answer:

Click here to see answer by ikleyn(52786)

Question 1075878: Huana spent $28 on writing on writing utensils, pens cost $4 dollars and $2 pencils. She bought a total of 8. How many did she buy?

Click here to see answer by JulietG(1812)

Question 1075891: 3y=2x
y=x+4
Click here to see answer by ikleyn(52786)

Question 1075836: Find the linearization of the function f(x,y)=sqrt(152−5x^2−2y^2) at the point (5, -3).
L(x,y)=

Use the linear approximation to estimate the value of f(4.9,−2.9) =
Click here to see answer by Fombitz(32388)

Question 1076043: The line has an x-intercept at -4 and is parallel to the line containing (3,1) and (2.6)
Click here to see answer by Boreal(15235)

Question 1076079: Pierre's ice cream Shoppe charges $1.19 for a scoop of ice cream and $0.94 for each topping. Gordon paid $4.55 for a three-scoop sundae. How many toppings did he get?
Click here to see answer by josmiceli(19441)

Question 1076557: Solve each pair of equation given below using elimination method:X+2y=-4. 3x-5y=-1
Click here to see answer by MathLover1(20850)

Question 1076557: Solve each pair of equation given below using elimination method:X+2y=-4. 3x-5y=-1
Click here to see answer by MathTherapy(10552)

Question 1077113: 8x-6y=-96
2x+3y=12
Click here to see answer by stanbon(75887)

Question 1077206: How do you put y=3/4x-6 in standard form
Click here to see answer by josgarithmetic(39617)

Question 1077350: I need to find the center and radius by hand and having difficulty;
x^2-10x+y^2+6y=15
Click here to see answer by math_helper(2461)

Question 1077347: I need to find the solution set by hand and having difficulty;
3x^2+3y^2=27
3x^2+2y^2=23
Click here to see answer by Alan3354(69443)

Question 1077355: HELP!!
The quadratic function S(t) = -16t^2 + 35t + 11=2 models an object's height above the ground, S(t) in feet, t seconds after it was thrown upwards. After how many seconds does the object reach its maximum height? Round the answer to the nearest hundredths, Don't forget units.

Click here to see answer by ikleyn(52786)

Question 1077351: I need to find what is (f-g)(x) by hand and having difficulty;
f(x)=5x^3+3x-8 and g(x)=2x^3-x^2+7
Click here to see answer by josgarithmetic(39617)

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