Answer:
(-6,-4)
Step-by-step explanation:
Hope this helps! (:
Answer:
cindy=15 grandmother=75
Step-by-step explanation:
90 divide 6 equal to 15
47inches in Cm. is C. 119.38cm
Answer:
The answer to your questions is: 25 new teachers
Step-by-step explanation:
Data
# of students = 2000
ratio = 3:80 teachers to students
New teachers = ?
Process
I suggest to use rule of three to solve this problem
3 teachers ---------------- 80 students
x ---------------- 2000 students
x = (2000 x 3) / 80 = 75 teachers
Number of initial teachers = 75
The ratio change to 1:20
1 teacher ------------------- 20 students
x ------------------- 2000 students
x = (2000 x 1) / 20
x = 100 teachers
Number of new teachers = 100 - 75 = 25
Answer: The answer would be f^-1 (x) = x/2 - 3/2