X = 4.33333333333
y = 5.33333333333
z = 6.33333333333
Just type it into the graphing calculator, but reorder and solve for y first.
x + y = 9
y = 9 - x
y = x^2
In the graphing calculator,
Y1 = 9 - x,
Y2 = x^2
If you don't have a graphing calculator try desmos.
If 5/8 of the teachers are males, there are 45 male teachers.
Subtract this value from 72 (i.e., find 3/8 of 72), and you will find that there are 27 female teachers.
Answer: The answer is 408/5 , as a mixed number = ( 81 3/5)
~hope this helps!~
Step-by-step explanation: