159 Answered Questions for the topic Matrix

If the animal is initially in the woods, what is the probability that it is in the meadow on the next three observations?

If the animal is in the woods on one observation, then it is three times as likely to be in the woods as the meadows on the next observation. If the animal is in the meadows on one observation,... more

Markov Chains

If the student attends class on a certain Friday, then he is three times as likely to be absent the next Friday as to attend. If the student is absent on a certain Friday, then he is five times as... more

Probability and Markov Processes? Free Throws. Please Help.

If she made the last free throw, then her probability of making the next one is 0.9. On the other hand, If she missed the last free throw, then her probability of making the next one is 0.2. Assume... more
Matrix Math Matrices

11/18/15

Applied math Matrices

Given the matrices below showing grades, marks, and population distribution by class, how many males scored <80%?                    Sr3     Sr4 >90%      [ 8%       7%]               M  ... more

Finding Production matrix

A=  0.8    0.2     D=   6         X= ?       0.1    0.4             3              ?               

10/14/15

Full problem in description: She needs to feed 164 cats and 24 dogs. Her budget is $4240. How much can Margie spend on each dog for food and medication?

The full question is: Margie is responsible for buying a week's supply of food and medication for the cats and dogs at a local shelter. The food and medication for each dog costs twice as much as... more

-x-2y=-10 how do you graphy this linear equation?

i dont know how to graph this, someone please help me 
Matrix

06/10/15

can't figure out this matrix problem

A souvenir shop gave away small gifts valued at $5 for sales of $25-$74.99, medium gifts valued at $8 for sales $75 - $149.99, and large gifts valued at $12.50 for sales about $150. The store gave... more

Write an augmented matrix for the system. Use row operations to put it in row ecjelon form. Find y then back substitute to find x.

2x+10y=-12 -3x+y=34I have the matrix and what to multiply it by except the last one. I'm really lost. Please help and show work.  2   10     -12     *1/2-3   1      34   1    5     -6    *3 -3... more

Write an augmented matrix for the system. Use row operations to put it in row ecjelon form. Find y then back substitute to find x.

x+3y=-18 3x-y=16 I have the matrix but i'm lost on the rest of it. Please show work.   1  3  -18 3 -1   16

04/23/15

I need help solving a word problem using matrices.

A ceramics workshop makes wreaths, trees and sleighs for sale at Christmas. A wreath takes 3 hours to prepare, 2 hours to paint and 10 hours to fire. A tree takes 17 hours to prepare, 3 hours to... more
Matrix

04/07/15

If matrix A is 3 x 3 and B is 4 x 3, how many multiplicities can be made?

What matrix multiplication combinations are possible? My book says that it is impossible but the only options are AB, BA, AA, BB and states (select all that apply.) I would say AA, and BB but not... more

Find the inverse matrix (if it exists)

[1 -1 1] [0 -1 0] [0 0 2] (the brackets are all suppose to be combined)   Answer: first row=? second row=? third row=?

03/24/15

What is the determinant of the matrix

-3,4 -5,8

03/24/15

Evaluate AB when

A=-2,2     0,-4     1,6 and B=-4,7,1/4           0,5,2

03/24/15

Evaluate 1/3k+4/3 j when

J= 2,2     7,1/3 k=1/4,4     5,2/3

03/24/15

Evaluate -1/2 a when

A= 5/12,-4     -3/7,-9/3

03/24/15

Evaluate 4(u+v) when

U=-1/4,-2     -5,-4/3 and v= -3/4,4            6,-2/3

03/24/15

Evaluate x-y when

X=-7,4      2,-5 and y =-5/2,-12/3            2,-1

03/24/15

Evaluate c+d when

C=2/3,6      4,-3/4 and d= -4/3,-5           -2,-1/4

03/24/15

Evaluate -3x when

X= -4,7,-3      5,-2,1

03/24/15

Matrices evaluate a+b when

A=2,8      0,-4     -1,6 And b=-4,0           -7,-5           1/4,-2
Matrix Matrices

12/08/14

determine the indicated matrix of operations

let A= [-6 5             1 7             5 8]  and B = [7 -3                                  -3  2                                   2  5]    Find A+ B

12/04/14

when the determinant of the coefficient matrix of a system of equations does not equal zero

The system has how many solutions 
Matrix Algebra 2

12/04/14

Whitch of the following correctly shows the row operation

-3R2+2R1→R2 For the matrix below  3,5,-6 -2,-1,4

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