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

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Question 190726: For the pair of equations, determine whether their graphs are parallel (do not graph).
yes or no
y=4x+6
y=4x-7
Click here to see answer by Mathtut(3670)

Question 191796: solve the equation
x^2+2x-8=0
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Question 191795: solve the equation
x^2+2x-8=0
Click here to see answer by Mathtut(3670)

Question 191935This question is from textbook
: How are addition and multiplication used to solve a linear equation? Demonstrate by solving "12x + 6 = 31 – 2x" Thank You!This question is from textbook

Click here to see answer by nerdybill(2446)

Question 191937This question is from textbook
: Explain how to
a.Apply elimination in solving a system of equations.
b.Apply substitution in solving a system of equations.
c.Demonstrate each technique in solving the system
2x + 7y = 12
5x – 4y = -13 Thank You!This question is from textbook

Click here to see answer by RAY100(1637)

Question 193169This question is from textbook

: please help me...i dont understand this equation.
we need to find the coordinates of the midpoints of the segments with the given endpoints.
(10,-3)(-8,-5)
This question is from textbook

Click here to see answer by ankor@dixie-net.com(6691)

Question 193765: 6x^2 - 13x -5 Factor completely
Click here to see answer by Mathtut(3670)

Question 194832: The first side of a triangle measures 5 in. less than the second side, the third side is 3 in. more than the first side, and the perimeter is 17 in. How long is the third side?

If s represents the length of the second side, which of the following represents the length of the third side?
s - 5
s - 2
s + 3

Click here to see answer by jojo14344(1483)

Question 194884: Name th set of numbers to which 1.68 belongs
Click here to see answer by user_dude2008(715)

Question 195171: I Need Help With This Question
0.12(x-10)-0.05(x-30)=-1.80
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Question 195841This question is from textbook mathematical ideas
: Algebra linear Equations I need the problems solved.This question is from textbook mathematical ideas

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Question 196544: The diameter of a large circle is twice that of the small circle which is inside the large one. How many rotations will the small circle make in rolling without slipping on the inside of the large circle and also on the outside of the large circle?
Click here to see answer by edjones(3291)

Question 196662This question is from textbook Algebra and Trigonometry

: A woman drove part of a 185 mile trip at 50 miles per hour and the reast at 55 miles per hour. Find the distance she traveled at 50 miles per hour if her total time was 3 hours.This question is from textbook Algebra and Trigonometry

Click here to see answer by Alan3354(6059)

Question 196663This question is from textbook Algebra and Trigonomety

: Sove A=2(pie)r(r+h) for h.This question is from textbook Algebra and Trigonomety

Click here to see answer by vleith(1977)

Question 197708This question is from textbook Algebra 2 and Trigonometry

: A financial planner wants to invest $8000, some in stocks earning 15% anually and rest in bonds earning 6% annually. How much should be invested at each rate to get a return of $930 anually from the two investments?This question is from textbook Algebra 2 and Trigonometry

Click here to see answer by jcon16(2)

Question 197827: The following two points define a line: (3, 7) and (x, 9). Explain which value of x will give you a vertical line and write the equation of that vertical line.
Click here to see answer by stanbon(26256)

Question 198032: find an equation of the line containing (-3,-6) and perpindicular to the line 4x + 3y = 5
Click here to see answer by solver91311(5072)

Question 197704This question is from textbook Algebra and trigonometry

: An overseas phone call is charged at one rate (a fixed amount) for the first minute and at a different rate for each additional minute. If a 7 minute call costs $10 and a 4 minute call costs $6.40, find each rate.This question is from textbook Algebra and trigonometry

Click here to see answer by arallie(162)

Question 198552: Look at the graph above and comment on the sign of D or the discriminant. Form the quadratic equation based on the information provided and find its solution.
I am not sure how to upload the graph, but the numbers posted are (1,0) (5,0) (3-4). Any help would be greatly appreciated.

Click here to see answer by solver91311(5072)

Question 198623: x+2y-z=3
2x-y+z=3
3x-4y+2z=-1
Click here to see answer by ankor@dixie-net.com(6691)

Question 198877: what is an equation to a line parallel to, 3x-4y=12 ? possible answers..
y=3x+5
y=-0.75x+8
y=4/3x-3
y=0.75x-6
y=-4/3x+12
Click here to see answer by checkley75(3666)

Question 199856: (s") + 6s' - 9s = t^2
where s" is like
d^2x/dt^2
(s") + 6s' - 9s = t^2
where s" is like
d^2x/dt^2
Click here to see answer by jim_thompson5910(13787)

Question 200479: Please help me solve the problem. Thank you!
f(x)=x+4
f(-8)
f(-4)
Non-linear function:
f(x)= 5+x2
Two inputs to evaluate:
f(1)
f(0)
Nonlinear Function: y=x^2+3x-12
Inputs: 3,8
Click here to see answer by RAY100(1637)

Question 200775: Give an ordered pair (x,y) of numbers that satisfy the equations
6x + y = 4
Click here to see answer by nerdybill(2446)

Question 200862This question is from textbook

: y-x/a=3mThis question is from textbook

Click here to see answer by Alan3354(6059)

Question 201135: Find each value
1. f(3) if f(x) = 7 - x^ 2(squared)
2. f(0) if f(x) = x - 3x^ 2 (squared)
Click here to see answer by RAY100(1637)

Question 201136: Graph each equation or inequality
1. y = 3/5 - 4
2. 4x - y =2
3. x = -4
4. y = 2x - 5
5. f(x) = 3x - 1
6. f(x) = [[3x]] = 3

Click here to see answer by PRMath(57)

Question 195903This question is from textbook

: please help me. i need help...im confused.
solve each rational equation for the variable.
3/r-1 = 6/r+2
4/2x-5 = 24/2xThis question is from textbook

Click here to see answer by PRMath(57)

Question 195903This question is from textbook

: please help me. i need help...im confused.
solve each rational equation for the variable.
3/r-1 = 6/r+2
4/2x-5 = 24/2xThis question is from textbook

Click here to see answer by MathTherapy(336)

Question 202027: Please help me Find the equation of perpendicular bisector of line segment with endpoints (3,-5) and (6,4)
Click here to see answer by stanbon(26256)

Question 202337: Algebra 2: How do i find an equation with the given slope and points for example : Slope = -2: passing through (3, -1)
Click here to see answer by PRMath(57)

Question 202340: Alg 2: How can i find the slope and an equation of a line with only the y-intercept and one point .. for example y-intercept= -2; passing through (-3,4)?
Click here to see answer by solver91311(5072)

Question 202859: i was wondering how would you do this problem and find its products :
(x+3)^3
and thank you in advance for helping me
Click here to see answer by jim_thompson5910(13787)

Question 202859: i was wondering how would you do this problem and find its products :
(x+3)^3
and thank you in advance for helping me
Click here to see answer by RAY100(1637)

Question 202998: What are the x-intercept and y-intercept of a linear equation?
Click here to see answer by rfer(2684)

Question 203050: How to graph 4x+y>=4
Click here to see answer by PRMath(57)

Question 203011: please i need someone to help me with these three problems:
the directions are: find an equation of the line having the given characteristics. Express ypur answer using either the general for or the slope-intercept form of the equation of a line.
1) Slope undefined; passing through (-3,4)
2) x-intercept= -2; passing through (4, -5)
3) y-intercept= -2; passing through (5,-3)

please help me and explain these answers with detail!! Please and Thank you!
Click here to see answer by PRMath(57)

Question 203486: Find the slope-intercept equation of the vertical line passing through the point (-5,-7)
Click here to see answer by user_dude2008(715)

Question 203495: Find the slope intercept form of the equation of the line passing through the points(6,-2)and (4,6).
Click here to see answer by stanbon(26256)

Question 203933This question is from textbook algebra 2
: y=2x+1This question is from textbook algebra 2

Click here to see answer by Alan3354(6059)

Question 204898This question is from textbook
: Find the product of (x³ + 2x)(x² + 1).This question is from textbook

Click here to see answer by alicealc(98)

Question 206010: Determine if the relation is a function or not.
{(1,2), (1,2), (-3,1), (5,0)}
Click here to see answer by HyperBrain(694)

Question 206339This question is from textbook

: dry ice is solid carbon dioxide. dry ice does not melt it changes directly from a olid to a gas. dry ice changes to a gas at -109.3 f. what is this temperature in degrees celsius?This question is from textbook

Click here to see answer by Alan3354(6059)

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