Answer:
abt 75%
Step-by-step explanation:
Say she chooses topic A. She needs at least one book to arrive on time. The probability that no books arrive on time is 0.1 x 0.1 = 0.01 so the probability that at least one book arrives on time is 1 - 0.01 = 0.99.
Say she chooses topic B. She needs at least two books to arrive on time. The probability of no books arriving on time is 0.1 x 0.1 x 0.1 x 0.1 = 0.0001. The probability of exactly one book arriving on time is 4 x 0.1 x 0.1 x 0.1 x 0.9 = 0.0036 (binomial probability distribution formula - the 4 comes from 4C1). So the probability of her not getting enough books is 0.0001 + 0.0036 = 0.0037 and the probability she does get the books she needs on time is 1 - 0.0037 = 0.9963.
So she should choose topic B.
Answer:
x is 2 and y is 2✓3
Step-by-step explanation:
this is because of the 30 60 90 theorem
so 1 is n
and x has to be 2n so it is 2
and y is n√3 so it's 2√3
Answer:
Step-by-step explanation:
Given
Required
Prove it's a kite
Start by calculating the length of the sides of the kite using:
Hence:
proves that it is a kite
Answer:
I Already Said It's 5000 Bro
