You are making necklaces for your friends. you have 36 blue beads and 42 red beads. how many necklaces can you make? show your work .

In a question like this, you are trying to find the Highest Common Denominator, or HCF. This can be done manually, by finding all the factors of 42 (1,2,3,6,7,14,21,42), all the factors of 72 (1,2,3,4,6,8,9,12,18,24,36,72), and comparing them to see that their HCF is 6. Or, it can be done by dividing both numbers,

=7242, simplifying the fraction

=127, then dividing the starting number with the new simplifiied number, remembering always to divide numerator with numerator and denominator with denominator.

7212=6 or 427=6

This process works with any two numbers which you want to find the HCF of, and can be simplified into this rule:

If a= any number, b= any number and cd is the simplified fraction of ab,

The HCF =ac or =bd

I hope that helped!

thanx

heyaa

same question

different concept

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.