Answer:
1= 3
2= 1
3= 4
4= 2
Step-by-step explanation:
Answer:
(b) √5
Step-by-step explanation:
The square root of an integer is rational if the integer is a perfect square. You probably know the first few perfect square integers are 1, 4, 9, 16, 25, 36, ...
The integer 5 is not on that list, so its square root will be irrational.
√5 is irrational
=1/4+1/4+1/16=8/16+1/16=9/16
Answer:
Step-by-step explanation:
Given
Proportion = 55%
Required
Probability that at least one out of 7 selected finds a job
Let the proportion of students that finds job be represented with p
Convert to decimal
Let the proportion of students that do not find job be represented with q
Such that;
Make q the subject of formula
In probability; opposite probabilities add up to 1;
In this case;
Probability of none getting a job + Probability of at least 1 getting a job = 1
Represent Probability of none getting a job with P(none)
Represent Probability of at least 1 getting a job with P(At least 1)
So;
Solving for the probability of none getting a job using binomial expansion
Where and n = 7; i.e. total number of graduates
For none to get a job, means 0 graduate got a job;
So, we set r to 0 (r = 0)
The probability becomes
Substitute 7 for n
Substitute and
Recall that
Substitute
Make P(At least 1) the subject of formula
<em>(Approximated)</em>