Answer:
B
Step-by-step explanation:
using the cofunction identity
• sin (90 - x) = cosx / cos(90 - x) = sinx, hence
cos 19° = sin(90 - 19)° = sin 71°
Answer:
a) The probability that at least 5 ties are too tight is P=0.0432.
b) The probability that at most 12 ties are too tight is P=1.
Step-by-step explanation:
In this problem, we could represent the proabilities of this events with the Binomial distirbution, with parameter p=0.1 and sample size n=20.
a) We can express the probability that at least 5 ties are too tight as:
The probability that at least 5 ties are too tight is P=0.0432.
a) We can express the probability that at most 12 ties are too tight as:
The probability that at most 12 ties are too tight is P=1.
Answer:
-311.74
Step-by-step explanation:
A=P+Prt ----> A-P=Prt ----> (A-P)/(Pt) =r
He earns $6 the first year.