Answer:
10
Step-by-step explanation:
By drawing?
If so, here: first outline the current shape as big as you want it... Then, erase the first shape!
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.
N-1(-1/2) is the formula because the sequence is taking half of the previous number and changing its sign
