Step-by-step explanation: We can write a ratio using the word "to", using a colon, or using a fraction bar.
Here, since we want our ratio in simplest form,
I would use a fraction bar.
Now, the problem asks us to compare
the number of boys to the number of girls.
We know that there are 12 boys
and we know that there are 15 girls.
So our ratio is 12/15.
However, this can be reduced to 4/5.
Answer: 3.87132498658 in other words 3.871
Step-by-step explanation:
Answer:
495 combinations of 4 students can be selected.
Step-by-step explanation:
The order of the students in the sample is not important. So we use the combinations formula to solve this question.
Combinations formula:
is the number of different combinations of x objects from a set of n elements, given by the following formula.

How many combination of random samples of 4 students can be selected?
4 from a set of 12. So

495 combinations of 4 students can be selected.
Hello there.
The bakers healthy baker can make 280 bagels in 10 hours. how many bagels can they bake in 15 hours? what was that rate per hour
Answer: First you should calculate the rate per hour.
280 / 10 = 28.
In one hour the baker can make 28 bagels.
Multiply the one hour amount by 15.
28 x 15 = 420.
In short, Your answer is the baker can make 420 bagels in 15 hours and it is 28 bagels per hour.
Hope This Helps You!
Good Luck Studying ^-^