Answer: 
Step-by-step explanation:
Given
The theoretical probability of choosing an event A is 
The sum of the probability of occuring and non-occuring of an event is always equal to 1.
So, the probability of non choosing Event A is

Answer:
28⁵
Step-by-step explanation:
4⁵ × 7⁵ = 17210368
Simplify = 28^5
(hope this helps can I pls have brainlist (crown) ☺️)
Answer:
option 3 ⇒ π
Step-by-step explanation:
The general equation of the given function is as following
f(x) = A cos (Bx)
Where A is the amplitude
and B = 2π/period
For the given function f(x) = cos 2x
B = 2
period = 2π/B = 2π/2 = π
Answer:
eeeeeeeeeeeee ready?
Step-by-step explanation:
Take 150 / 100 = 1.5
1.5 x 80 = 120
150 - 120 = 30
20% of 150 students is 30