Answer:
Twelve-fifths.
Step-by-step explanation:
The diagram is shown below
Given triangle be right angled at
,
Withe reference to
,
Its opposite side is
, adjacent side is
and hypotenuse is 
We are to find the value of 
We know 
Substituting the above values we get,

So the answer is Twelve-fifths.
Answer: The answer is x=-4 and y = 2
Step-by-step explanation: you have to use substitution
Answer:
See Attachment
Step-by-step explanation:
Answer:
Step-by-step explanation:
Answer:
a)P=0.42
b) 
Step-by-step explanation:
We have a binomial distribution, since the result of each experiment admits only two categories (success and failure) and the value of both possibilities is constant in all experiments. The probability of getting k successes in n trials is given by:

a) we have k=2, n=10 and p=0.01:

b) We have,
, Here P is the probability that at least one particle will penetrate the shield, this probabity has to be equal or greater than 0.95. Therefore, this will be equal to subtract from the total probability, the probability that the particles do not penetrate raised to the total number of particles.
