Please give a step by step explanation

HCF= 140       LCM=5880

Step-by-step explanation:

What I can really explain is how to find them. HCF is the Highest common factor, or what is the highest number that can be multiplied with another number to get 140 and 5880.  It applies to BOTH numbers.

Lowest common multiple is the lowest number that when you count each number, both numbers reach the same point.

For example, the lowest common multiple between 2 and 3 is 6 because it is the lowest number where they meet.

2, 4, 6.

3, 6.

6, 10

9, -13

12, -21

18, -23

step-by-step explanation:

you just add 6 to the x-coordinate and subtract 10 from the y-coordinate.

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.