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.
3,6,9,12,15 thats what i think. hope it helps
Hello!
First of all there are fifteen total vegetables. First of all we have the probability that he will get a tomato.

Now if he were to select a tomato there would only be fourteen vegetables left. Now our probability will be out of 14. Now we have the cucumber.

Now we multiply our two probabilities.

Therefore, Bodhi will have
D) 5/42 chance of selecting a tomato and then a cucumber.
I hope this helps!
It's a glitch I believe (screenshot and contact your teacher)
Answer:
Yes if the voltage is kept constant
Step-by-step explanation:
V=IR