A=1x3 means 1 row and 3 columns.
B=3x4 means 3 rows and 4 columns.
AB is a compatible multiplication because A has three columns and B has 3 rows.
However, BA is not a compatible multiplication because B has 4 columns while A has only 1 row.
The general trick is if you read the row/column of the two matrices as 1-3-3-4, and the two middle ones are identical, then AB would be a compatible multiplication. On the other hand, BA would read 3-4-1-3, since 4 and 1 are not identical, so it is not a valid multiplication.
Do remember 1x3 means 1 ROW and 3 COLUMNS.
Answer:
22.919 or 23 degrees
Step-by-step explanation:
Use the theta or x in place of the usual angle. the lengths are adjacent and hypotenuse (a/h) so you use cosine. cos(x)=35/38 or cos(θ)=35/38
Answer:
Step-by-step explanation:
If it is a fair spinner (equally likely to fall on any sector) then p(green) = 1/4.
As a matter of fact, each color = p(color) = 1/4
First you would add 2z to both sides
6k = 12 + 2z
second divide 6 from both sides
K = (12 + 2z) / 6
^^ thats your answer :)
Answer:
335.5
Step-by-step explanation:
if we take your second sentence it means that 1342/4 so when you do the long division you will get it
