125 Answered Questions for the topic matrices

Matrices

10/26/15

#### I need help on matrices I don't understand

A small business takes out loans from three banks to buy some new equipment. The total amount of the three loans is $34000. The first bank offered an interest rate of 16%. The second bank offered a...
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10/25/15

#### Volume of a Pyramid

Find the volume of a pyramid given its height is 138.8m and its base is 230.4m along the side
use the formula: | x1 y1 z1 1|
| x2 y2 z2 ...
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Matrices

09/16/15

#### The sum of three numbers is 26. Twice the first minus the second is 2 less than the third. The third is the second minus three times the first.

Find the numbers.

Matrices

07/23/15

#### . Show that any linear transformation maps the origin to the origin.

Please answer the question. I am stuck and I do not how to prove the question given.

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...
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04/12/15

#### Given matrices find A - 2B and etc

A= [1 -2]
[-4 0]
B= [0 1 0]
[-3 2 1]
C=[-1 -1]
[0 -2]
(the brackets are actually suppose to be connected for each one)
(a) Find A - 2B =Answer: First row=? ...
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Matrices

03/26/15

#### The resilt of 9 matches played by 4 football teams can be shown in a table or stored in a matrix.

Team wins draws losses
A 3 6 0
B 2 1 6
C...
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03/24/15

#### Given the matrices... Find A times B

A=[-1 0]
[0 -2]
B=[1 -2]
[3 -1]
(the brackets in each A and B are actually suppose to be connected)
1st row=? 2nd row=?

03/24/15

#### Given the matrices...Find 2A-3B

A= [1 2]
[-1 0]
B=[-1 -3]
[4 1]
first row=?
second row=?
(the brackets for each A and B should be connected)

03/23/15

#### Given the following matrices find E times F

E=[0 1] F=[1 2 0] [-1 2] [-1 -2 -1] [1 3](All of the brackets for each E and F should actually be conjoined)First row=? second row=? third row=?

Matrices Matrix

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

Matrices

10/31/14

#### HELP: Supposed to solve using Matrix...

In a recent game at your community college, the men’s basketball team made 45 baskets from the field; some were 2-pointers and some were 3-pointers. In total, 101 points were made from the field....
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#### Find all 2x2 matrices

Find all 2x2 matrices A that are symmetric and whose squares are equal to themselves

Matrices

09/16/14

#### solve the system x+y+z=105 76x+53y+64z=6517 x-z=6622 x=? y=? z=?

solving linear equations with 3 variables by using matrices

Matrices Matrix

09/16/14

#### Triangle ABC with A (4,5), B (-3,4) and C(1,-4) is reduced so that its perimeter is one-half the original perimeter. Write the coordinates of the result image.

We are learning about Matrices and it's still a little confusing for me.

08/02/14

#### Matrix 2x1 transpose - inverse

If A and B are any matrices of order 2×1, why does the product ABt have no inverse?

Matrices

01/15/14

#### What does invariant line- y axis mean? How to find the matrix of shears and stretches without memorising?

I know that invariant line- y axis means that the stretch or shear is parallel to the x axis - but what does that mean??
Also, how can i use base vectors to find the matrix of shears and...
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Matrices

12/05/13

#### system of linear equations: Matrices

Carletta has $10,000 to invest. as her financial consultant you recommend that she invest in treasury bills that yield 6%, treasury bonds that yield 7%, and corporate bonds that yield 8%. Carletta...
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11/26/13

#### Use a matrix approach to solve the system

x − 3y − z = 133x + y − 4z = −13−2x + 5y + 3z = −19
x = ?
y = ?
z = ?
(If the system has infinitely many solutions, express your answer in terms of k, where x = x(k), y = y(k), and z = k....
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Matrices

02/28/13

#### a,b,c are matrices a + b + c = b + a + c true or false

a,b,c are matrices a + b + c = b + a + c true or false

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