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

Algebra -> Algebra -> College -> Linear Algebra -> Questions on Algebra: Linear Algebra (NOT Linear Equations) answered by real tutors! Log On

Problems, free tutors

Quiz

In Depth

Tutors Answer Your Questions about Linear Algebra (FREE)

Question 206404: rene is 5 older than angie, in 8 years 3 times angie's age will exceed twice rene's age by 10.find their ages.
Click here to see answer by lisboa(1)

Question 206403: rene is 5 older than angie, in 8 years 3 times angie's age will exceed twice rene's age by 10.find their ages.
Click here to see answer by edjones(3291)

Question 207320: 5x-11 is that an expression, alinear equation, or a nonlinear equation and how can you tell
Click here to see answer by RAY100(1637)

Question 207315: 5x-11 is that an expression, alinear equation, or a nonlinear equation
Click here to see answer by RAY100(1637)

Question 207372: Create an example of a real-life word problem which can be solved using algebraic inequalities. Write the problem, and then solve the problem. Show the algebraic inequalities that are involved including all necessary steps taken to get the answer.
Click here to see answer by ankor@dixie-net.com(6691)

Question 207706This question is from textbook Algebra 2
: This question is from textbook Algebra 2

Click here to see answer by Alan3354(6059)

Question 207865: Solve for x in terms of y:
y= 1/1-(1/1-x)
Click here to see answer by RAY100(1637)

Question 208069: x^2+2x-49

Click here to see answer by Alan3354(6059)

Question 208066: S=5(r squared)t, solve for t
Click here to see answer by checkley77(7035)

Question 208477: I am trying to figure out a question that has 2 parts. The question is as follows:
A) What is the domain and range of the relation x +[y] = 3?
b) What is the domain and range of the function y = 2x^2-3?
Since [y] cannot be a negative number would the answer for part (a) be: (-&, 3)
For part (b) I am not quite sure bit I think it would be a union containing the square root of 2).
I am lost!
Any help would be greatly appreciated.

Click here to see answer by stanbon(26259)

Question 208474: I am trying to figure out a question that has 2 parts. The question is as follows:
A) What is the domain and range of the relation x +[y] = 3?
b) What is the domain and range of the function y = 2x^2-3?
Since [y] cannot be a negative number would the answer for part (a) be: (-&, 3)
For part (b) I am not quite sure bit I think it would be a union containing the square root of 2).
I am lost!
Any help would be greatly appreciated.

Click here to see answer by Theo(667)

Question 208539This question is from textbook Algebra 2
: 2x-6y=6This question is from textbook Algebra 2

Click here to see answer by Alan3354(6059)

Question 208800: how to combine terms when fractions are involve ex3/2(y+4)=20-2/2
Click here to see answer by RAY100(1637)

Question 208799This question is from textbook
: This question is from textbook

Click here to see answer by Alan3354(6059)

Question 209777This question is from textbook
: How do you solve this equation?This question is from textbook

Click here to see answer by jim_thompson5910(13787)

Question 210374: 2x+y=8 solve for y
Click here to see answer by vleith(1977)

Question 210370: L=G m1m2/t^2 solve for m1
Click here to see answer by vleith(1977)

Question 210372: 8x-4y=12 solve for y
Click here to see answer by tutor_paul(424)

Question 210373: Q=m-v/k solve for m
Click here to see answer by Alan3354(6059)

Question 210371: G=7/2(p-98) solve for p
Click here to see answer by nyc_function(260)

Question 210818: Soybean meal is 12% protein; Cornmeal is 6% protein. How many pounds of EACH should be mixed together in order to get a 240 lb. mixture that is 9% protein? How many pounds of cornmeal should be in the mixture? How many pounds of soybean meal should be in the mixture?
Click here to see answer by checkley77(7035)

Question 210816: The perimeter of a standard sized rectangular rug is 36 ft. The length is 2ft longer than the width. Find the width and length.
Click here to see answer by checkley77(7035)

Question 211328: Joy is an instructional assistant in one of the college labs. She is on a very tight budget. She loves Jamaican Blue Mountain coffee, but it costs $18 a pound. She decides to blend this with regular coffee beans that costs $2.37 a pound. If she spends $14.25 on 3 pounds of coffee, how many pounds of each did she purchase?
Round your answer to two decimal places.
She purchased______pounds of Jamaican Blue Mountain Coffee.
She purchased______ pounds of Regular Coffee.
i have no idea how to do this!!!!!
please help!
Click here to see answer by stanbon(26259)

Question 211348: 5/3x+4/3=1/3+1/3x
Click here to see answer by checkley77(7035)

Question 211594:
(3x/4)-x = (x/28)-8/7
Click here to see answer by scott8148(3382)

Question 211596: solve for c

Click here to see answer by Edwin McCravy(2920)

Question 211750: Hi all, I am struggling a bit with the following matrices problem.
I need to find the determinate of the following matrices by Inspection. Then give reasons in each each. How do I do this?
The matrices are:
B =
( 2 11 -3 1)
( 1 5 -7 -4)
( 6 13 -5 2)
( 4 22 -6 2)
C =
( 2 9 -1)
( 0 2 7)
( 0 0 4)
D =
( -3 0 0)
( 0 2 0)
( 0 0 -5)
Any help would be great.
-Nick.

Click here to see answer by jsmallt9(590)

Question 212564: x+y-2z=5
x+2y+z=8
2x+3y-z=1
Click here to see answer by stanbon(26259)

Question 212546: i need help..i cant to algebra 2 at all. right now we are solving linear inequalities. i dont know how to solve the solution and graph the solution
Click here to see answer by Alan3354(6059)

Question 212623: During one calendar year, a state trooper issued a total of 375 citations for warnings and speeding tickets. Of these, there were 37 more warnings than speeding tickets. How many warnings and how many speeding tickets were issued?
Click here to see answer by checkley77(7035)

Question 212741This question is from textbook
: How do you solve this equation by substitution
This question is from textbook

Click here to see answer by Edwin McCravy(2920)

Question 213263: (-3,4) (-4-2)
Click here to see answer by checkley77(7035)

Question 213317: Use the Pythagorean Theorem to find the slant height of the face of the unit pyramid with edge 11 cm.
Click here to see answer by rapaljer(3610)

Question 213646This question is from textbook Algebra 2
: The indicated variable:

16. Discount
Solve for L: S=L - rL

18. Profit
Solve for C: P=R -C

20. Investment at compound interest
Solve for P: A= P(1+r) exponent tThis question is from textbook Algebra 2

Click here to see answer by rfer(2688)

Question 213817: How do you solve F(X)=5/(X-2)
F(5)=
F(-3)=
Click here to see answer by stanbon(26259)

Question 213817: How do you solve F(X)=5/(X-2)
F(5)=
F(-3)=
Click here to see answer by RAY100(1637)

Question 213825: Can someone please help me solve:
how to solve f(x)=x^2+30

Thank you,
Click here to see answer by drj(1380)

Question 214433: Can someone please help me solve this problem:

f (x)= 3x - 2x + 1

f(-1) and f(10)

Thank you.
Click here to see answer by tutor_paul(424)

Question 214432: Can someone please help me solve this problem:
Y(2)=x-3
Thank you.
Click here to see answer by Alan3354(6059)

Question 214431: Can someone please help me solve this problem:
Y(x)=x-3
Thank you.
Click here to see answer by Alan3354(6059)

Question 214430: Can someone please help me solve this problem:

f(x)=x^2+30

Thank you,
Click here to see answer by Alan3354(6059)

Question 215144: Can someone please help me with:
xy-7y=49
Click here to see answer by Alan3354(6059)

Question 215222This question is from textbook College Algebra
: 2[x-(4+2x)+3]=2x+2This question is from textbook College Algebra

Click here to see answer by shymeerab(21)

Question 215486: 3x+16<7
Click here to see answer by drj(1380)

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, 1756..1800, 1801..1845, 1846..1890