###### Asked in Uncategorized

Uncategorized

# Can a matrix with dimension of 4x5 be added to another matrix with demensions of 5x3?

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## Related Questions

###### Asked in Physics

### Can scalar quantities be added together?

Yes, scalar quantities can be added, as long as they are the
same dimension and you keep units straight. For example you cannot
add cubic meters to square meters. But (especially in the imperial
system) pounds and ounces, or feet and inches are added, and
displayed in that fashion. Minutes and seconds is another.

###### Asked in Math and Arithmetic, Algebra, Geometry

### If a point has no dimension and a line is made up of points and has dimesnsions how can this be?

A line is not made up of points for the very reason that points
have no dimension. It is absolutely impossible for things with no
dimension, so matter how many are added, to ever equal something of
one dimension.
It is easy to think of points as dots. Dots, however, are only
representations of points to help us visualize pints. Although many
dots added together can make a line, points cannot.

###### Asked in Pastries

### How is air added to puff pastry?

###### Asked in Geography

### What is land surveying?

###### Asked in Math and Arithmetic, Algebra, Linear Algebra

### How do you find inverse of the matrix using augmented matrix?

your first step is to augment(connect with the bar in between)
the identity matrix onto the right side of the original
matrix
then your main objective is to turn your original matrix into
the identity matrix while only using elementary row
operations
elementary row operation rules:
row swap- you can swap any row with another row. meaning
the entire first row can be swapped with the second, or third row
but only entire rows may be swapped
row multiplication- you can multiply or divide entire
rows by a constant ex: if row1=3t-5s then row1 x 2=6t-10s
(note you must multiply every term in the variable)
row addition- any row can be added or subtracted onto
another row to change that row. note if you were to add row1
to row2 for example change would only be done to row2 not row1.
(very important)- be careful when adding rows remember that
when rows are being added/subtracted, they subtract according to
how columns within rows align with. this is where the most mistakes
happen.
(most important)- what ever action you perform on a row you
do it to the entire row. you must treat both sides of the line
as ONE UNIT(thasshow i remembered). when you perform an operation
on the original matrix, you cannot forget to do the same to the
augmented peice
if the original matrix is sucessfully changed into the identity
matrix using these rules, then you should end up with the identity
matrix on the original side and theinverse matrix on the
augmented side
examples of this method can be found by looking up linear
algebra on khanacadamy.org

###### Asked in The Matrix Movies

### What do the matrix movies have to do with math?

Not much, I think. :) I've seen all 3 movies multiple times and
I can't think of much relating to math. However, a matrix is a
function in math; according to dictionary.com, a matrix is "a
rectangular array of numbers, algebraic symbols, or mathematical
functions, esp. when such arrays are added and multiplied according
to certain rules."