The ratio 7:9 can be converted to the fraction
![\frac{7}{9}](https://tex.z-dn.net/?f=%20%5Cfrac%7B7%7D%7B9%7D%20)
, which is in simplest form
Answer:64 students
Step-by-step explanation:
using the empirical rule, we know that 34% of a normal distribunion is below the mean but above 1 standard deviation. This means that 16% of the students enter before 9:55. Take 16% of 400 and you get the amount of students in before 9:55
It would be 100. Because let's say you had to round 25 to the nearest 10 it would be 30 because everything ending with 5 (example: 5 to nearest 10 would go to 10 65 to the nearest ten would go to 70) but anything lower then 5 goes to the lower number.
Answer:
= x2 + x -6
= 3x -6
hope this helps. have a good day.