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

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Question 1071406: Y=3x+2 whats the value of y if x =4 is it 14

Click here to see answer by Alan3354(69443)

Question 1071620: 3/4x=54

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Question 1072548: Hi Please help
Dividing rational expressions
(6x^2 - 13x+6 ) * (56x^2 - 50x -64)
-------------- ----------------
(4x^3 - 32) (14x^2-13x-12)
(3x-2) (2x-3) * 2(28x^2 -25x -32)
------------ ----------------
4(x-2)(x^2 +2x+4) (2x-3) (7x+4)
Can I factor more ? How?
Thanks
Click here to see answer by Alan3354(69443)

Question 1072830: If x=-2, then what is -4-y^2? Would y^2 be (-2)^2 or -(2)^2?
Click here to see answer by ikleyn(52781)

Question 1072838: If y=-2, then would y^2 be (-2)^2 or -(2)^2?
Click here to see answer by Fombitz(32388)

Question 1072838: If y=-2, then would y^2 be (-2)^2 or -(2)^2?
Click here to see answer by Alan3354(69443)

Question 1073057: A line with a slope of -5/2 passes through the points (k,3) and (1,-2) find the value of k
Click here to see answer by Boreal(15235)

Question 1073227: part of $3000 is invested at 12% another part at 13% and the remainder at 14% yearly interest. the total yearly income from the three investments is $400. the sum of the amounts invested at 12%and 13% equals the amount invested at 14% how much is invested at each rate
Click here to see answer by jorel1380(3719)

Question 1073524: Given that g(x)=4/x , x is not equal to 0 and fg(x)=2x+3 find the function f.
Click here to see answer by josgarithmetic(39617)

Question 1073858: Sum of first 2n natural number is n(2n+1)
Mean of first 2n natural number is n(2n+1)/2n=n(2n+)/2

Click here to see answer by sachi(548)

Question 1073858: Sum of first 2n natural number is n(2n+1)
Mean of first 2n natural number is n(2n+1)/2n=n(2n+)/2

Click here to see answer by ikleyn(52781)

Question 1074062: Form a third degree polynomial function with real coefficients-5+I and -4 are zeros
Click here to see answer by josgarithmetic(39617)

Question 1075153: X+2y=5 in (mod 11)
Click here to see answer by Alan3354(69443)

Question 1075154: 4x+3y=6 in (mod11)
Answer must be integers
Click here to see answer by Alan3354(69443)

Question 1075280: Determine whether the following numbers are zero of the polynomial equation.
P(x)=x^3-2x^2+4x-8
A). -2
B). 2i
Click here to see answer by Boreal(15235)

Question 1075449: Given vectors:
OP = <4,1,-6>
OQ = <2,-7,5>
OR = <3,-2,4>
Find the scalar n in OP+nOQ that is perpendicular to OR.
Thx!
Click here to see answer by Edwin McCravy(20055)

Question 1075589: I need help with an equation.
29.83 x 0.7 x 2.38sq x sq root of x = 450
Click here to see answer by Alan3354(69443)

Question 1075980: One hundred years ago, a master silversmith could make a set of tankards in 8 days less time than his apprentice. However, the smith would charge $25 per day, while the apprentice would charge only only $2. Working together, the two could complete such a set of tankards in 3 days. Would it could cost less to have the master do the job alone, to have the apprentice do it alone, or to have both work together? State the cost in each case.
Click here to see answer by jorel1380(3719)

Question 1075981: Solve and plot on a number line:
2x + 5 > 7x -3-5x
Click here to see answer by josgarithmetic(39617)

Question 1076121: Reed and his brother Ryan can put 9 miles between them in 20 minutes when starting from the same point and sprinting at top speed in opposite directions. It takes the same time for Reed to draw a mile ahead of Ryan when they're running in the same direction (again starting from the same point). what is each one's top speed?
Click here to see answer by josgarithmetic(39617)

Question 453993: Find the values of a and b that make f continuous everywhere.
f (x)=
{
x2−4x−2 if x<2
ax2−bx+3 if 2≤x<3
2x−a+b if x≥3 }
I dont understand how i would solve this. Please help. Thank you. :)
Click here to see answer by ValerieDavis(6)

Question 1077108: x+y+2z=9
2x+4y-3z=1
3x+6y-5z=0
By Gaus Jaron method
Click here to see answer by MathLover1(20850)

Question 1077314: How do you rewrite an equation 2y+5x=-8 in slope intercept form, which is the slope and which is the y intercept
Click here to see answer by ankor@dixie-net.com(22740)

Question 1077641: find all 2x2 matrices whose null space is the line
Click here to see answer by Edwin McCravy(20055)

Question 1077648: Can you show me step by step how to solve the Multiple Representations for the Process y = 3x + 1. They show example like:
y = 3x + 1
y = 3(0) +1
y=0+1
y=1
ordered pair (0,1)
Click here to see answer by addingup(3677)

Question 1077875: Log3(x+1)-log3(x)+log3(3)

Click here to see answer by Alan3354(69443)

Question 1077277: 2x+2x+2x=0
-2x+5x+2x=1
8x+2x+4x=-1

By Gaus Jardon Method
Click here to see answer by Fombitz(32388)

Question 1078406: Two mechanics worked on a car. The first mechanic worked for
15
hours, and the second mechanic worked for
5
hours. Together they charged a total of
$1550
. What was the rate charged per hour by each mechanic if the sum of the two rates was
$160
per hour?
Click here to see answer by josgarithmetic(39617)

Question 1078692: M/m^2-4+2/m^2+5m+6-3m/m^2+m-6
Click here to see answer by ikleyn(52781)

Question 1079111: For the following functions, determine the stationary points and classify them. include graphs.
a) f(x) = 2x^2 - x + 6
b) f(x) = X^2 - 4x + 3
c) f(x) = x^3 - 3x + 3
d) f(x) = 1 - 9x - 6x^2 -X^3
Click here to see answer by Boreal(15235)

Question 1079453: Solve the system of equations given these two non linear eq's
and

Click here to see answer by solver91311(24713)

Question 1079891: Given the formula A=2*pi*r(r+h), solve for h.
Click here to see answer by Edwin McCravy(20055)

Question 1080180: Write a function whose graph represents the indicated transformation of the graph of f. f(x)=√x+4; vertical stretch by a factor of 4, followed by a translation 2 units right.
Click here to see answer by ikleyn(52781)

Question 1080552: 3x+4y-2z=6
x+y+z=2
x+2y-4z=2
Click here to see answer by Fombitz(32388)

Question 1081081: 27(x+y)�+8(2x-y)�
Click here to see answer by MathLover1(20850)

Question 1083049: Solve 2/7 = 3/x^2 giving your answer in the form a root b where b is an interger
Click here to see answer by solver91311(24713)

Question 1083383: With
52
gallons of fuel in its tank, the airplane has a weight of
2417.2
pounds. What is the weight of the plane with
78
gallons of fuel in its tank?
Click here to see answer by ikleyn(52781)

Question 1083391: 3x+6y=15; 6x+2y=20

Click here to see answer by Alan3354(69443)

Question 1083409: How long will it take money to triple if it is invested at the following rates?
(A) 5.7% compounded monthly
(B) 12% compounded monthly
Click here to see answer by math_helper(2461)

Question 1083410: What nominal rate of interest, compounded monthly, corresponds to an effective rate of 3.5%?
Click here to see answer by jorel1380(3719)

Question 1083893: Thirty more than a number
Click here to see answer by MathLover1(20850)

Question 1084066: Please help me solve this problem:
4t-6=24-t
Click here to see answer by Edwin McCravy(20055)

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