One thing for sure it is not b,d,c its a
1/x + 1/y = 8
x + y = 8
6/x + 12/y = 72n
Step-by-step explanation:
Number of students who wore a hat
= 4/7 * Number of students who bought a ticket
= 4/7 * 350 students
= 200 students.
Number of students not wearing a hat
= Number of students who bought a ticket - Number of students who wore a hat
= 350 students - 200 students
= 150 students.
(x+6)2+(y-10)2=36 , would be your equation.
-5 + n = -15
-15 + 5 = n
-10 = n
