Questions on Algebra: Linear Algebra (NOT Linear Equations) answered by real tutors!

Tutors Answer Your Questions about Linear Algebra (FREE)

Question 333561: The system {-8x+10=20} {y=4/5x+2} consists of what?
a. One solution, since the lines intersect
b. No solution, because the lines are parallel
c. Infinite solutions, because the lines are the same
d. No solution, because the lines are in different planes
Click here to see answer by stanbon(57219)

Question 333651: How do you solve and graph this problem?
(x+6)(x-4)>(x+1)(x-3)
Click here to see answer by stanbon(57219)

Question 333770: Please help me solve for Z:
4x+10yz-3=0
Click here to see answer by stanbon(57219)

Question 333771: Please help me solve for Z:
y^2+3yz-8z-4x=0
Click here to see answer by stanbon(57219)

Question 333914: can you help me find the general form of the equation of the line that passes through the given point and has indicated slope. (-2,-5) m= 3/4
Click here to see answer by checkley77(12569)

Question 333906: 1/3x + 3 = 3/4y
Click here to see answer by checkley77(12569)

Question 334047: need the help please...still no message sent...thanks
Click here to see answer by Edwin McCravy(8879)

Question 334680: Write the equation in point-slope form of each line described.
a. Parallel to y=-2+3x passing through (-2,8)
b. parallel to y=-4- 3/5(x+1) passing through (-4,11)
Click here to see answer by solver91311(16868)

Question 334760: help me With This Question Please It Says
What Of The Following Equations is NOT Linear?
F) Y= 2(x-3)
G) Y= 3x + 4
H) Y= 4x(x+5)
J) Y= 4 - 3x
Click here to see answer by vleith(2825)

Question 333784: I have tried this problem eight times with no correct answer. The problem says to solve the equation: 5/x+1 - 5/2= 4/3x+3

The the foward slash means that it is a fraction... i didnt know of any other way to do that. I also know that each side should be multiplied by the least common denominator of 6(x+1) and i did that but i am not sure where i went wrong...can someone please help!!
Click here to see answer by Alan3354(30958)

Question 334978: I cannot figure out the following equation. I am trying to solve for v and the equation is 5rv - sv = 2r
Click here to see answer by solver91311(16868)

Question 334613: Solve for x. (x/a-1)=ax+3
Click here to see answer by Fombitz(13828)

Question 336139: x/3=36x+7
I don't even know where to start. The book gives no examples that I can work from and I don't know what information is right/ wrong online.
Please help!
Click here to see answer by ankor@dixie-net.com(15623)

Question 336497: find the slope of the line joining the points whose coordinates are given. (a,b), (b,a)
Click here to see answer by jim_thompson5910(28476)

Question 336797: please help me solve this equation
2(x+5)-3(x-4)=19
Click here to see answer by Alan3354(30958)

Question 336973: 9+[4-(10-9)2]3
Click here to see answer by Fombitz(13828)

Question 337238: i need help with this problem: solve for (x)...(X+16/3X+2) less than or equal to 5
Click here to see answer by Fombitz(13828)

Question 337332: A=p+prt solve for p
A=p+prt solve for p
A= p(1+rt)
a/(1+rt)=p ans

Click here to see answer by chiexpert(48)

Question 337339: solve for x
ax+bx=c
solve for x
ax+bx = c
x(a+b) = c
x = c/(a+b)

Click here to see answer by chiexpert(48)

Question 337558: 3+y=3/5
Y=3/5 -3
Y=3/5 - 3/1*5/5
Y=3/5-15/5
Y=-12/5
Click here to see answer by Fombitz(13828)

Question 337558: 3+y=3/5
Y=3/5 -3
Y=3/5 - 3/1*5/5
Y=3/5-15/5
Y=-12/5
Click here to see answer by chiexpert(48)

Question 337781: -49y=105
Click here to see answer by rfer(12644)

Question 337781: -49y=105
Click here to see answer by jim_thompson5910(28476)

Question 337921: 4(2-6m) = 6(2-4m)
Click here to see answer by edjones(7569)

Question 337955: Find the value of x and YZ if Y is between X and Z.
6. XY = 5x, YZ = x, and XY = 25
Click here to see answer by Fombitz(13828)

Question 338153: 8-2x + 6 = 4x - 10
Click here to see answer by kvlsravya(8)

Question 338153: 8-2x + 6 = 4x - 10
Click here to see answer by checkley77(12569)

Question 338461: nafeesa graphed a line with slope 5 and y-intercept of -2
a. what is the equation of her line?
b. find the value of x when y=0
Click here to see answer by rfer(12644)

Question 338377: The cost of producing 4 units is 204.80$. The cost of producing 8 units is 209.60$ How much does it cost to produce 12 units?
Click here to see answer by rfer(12644)

Question 338137: 2x - 7 + 4x = x - 32
Click here to see answer by jim_thompson5910(28476)

Question 339210: a = v to the square divided by r
how can i rewrite this equation in at least 2 different forms?

Click here to see answer by Fombitz(13828)

Question 339511: Someone please help!!!
Write an equation in slope-intercept form for the line that has a slope of 3 and passes through (-1,2)
A. y=3x-1
B. y=3x-5
C. y=5x+3
D. y=3x+5
Thank you so, so much!!!!!
Click here to see answer by Fombitz(13828)

Question 339973: How do you determine whether a function is linear and then find the value of f(x). Ex. f(x)=x+7; f(-3)
Click here to see answer by jim_thompson5910(28476)

Question 339984: How would you find the value of f(x) when f(x) = |3x+1| ;f(-5) ? And how do you know if said equation is linear?

Click here to see answer by nyc_function(2733)

Question 340365: 10x - 5 = 3x - 12
Click here to see answer by vleith(2825)

Question 340430: what is the domain of a set of x's in a function?

Click here to see answer by Fombitz(13828)

Question 341508: 2x -3 > 23
Click here to see answer by stanbon(57219)

Question 341511: 2x -3 > 3x -1
Click here to see answer by rfer(12644)

Question 341509: 5x -4 < 21
Click here to see answer by rfer(12644)

Question 341523: The median household income, h, in Jackson County.
Click here to see answer by edjones(7569)

Question 341522: The temperature, t, in degrees Fahrenheit, in Siberia, Russia.
Click here to see answer by edjones(7569)

Question 341521: The number of students, n, attending a dance.
Click here to see answer by edjones(7569)

Question 341719: Bridges on expressways often have expansion joints, which are small gaps in the roadway between one bridge section and the next. The gaps are put there so that the bridge can expand in hot weather. Suppose that a bridge has a gap of 1.3 cm at 22 degrees, and .9 cm at 30 degrees. Write an equation for gap width as a function of temperature.
Click here to see answer by stanbon(57219)

Question 342266: the equation 5x^2+14x+1=0 has two solutions A and B where a
Click here to see answer by Fombitz(13828)

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