20/10%=20/0.1=200
x=200
200*23%=200*0.23=46
Answer:
I'm guessing A
sorry if I'm wrong
Step-by-step explanation:
.
Rates:
Ryan: 1 hole per 5 hours
Castel: 1 hole per 6 hours
.
Let x = time if working together
then
x(1/5 + 1/6) = 1
x(6 + 5) = 30
11x = 30
x = 30/11
x = 2.7273 hours
or
x = 2 hours and 44 minutes
Answer:
(S, FS, FFS, FFF)
Step-by-step explanation:
According to the Question,
- Given, A person must enter a 4 digit code to gain access to his cell phone. He will enter codes until he is successful.
- however, he cannot try more than 3 times or the phone will lock him out.
- Let, S denote a successful attempt and F denote a failed attempt.
So, the sample space for this random experiment is
{S, FS, FFS, FFF}
The person stops trying when he successfully enters the code or when he has failed at all 3 attempts .