9514 1404 393
Answer:
(b) 60°
Step-by-step explanation:
The sum of angles in a pentagon is 540°, so you have ...
90° +90° +150° +x +150° = 540°
x = 540° -480°
x = 60°
Answer: They can fit 9 thick books into the bookshelf
Step-by-step explanation: So I like putting fractions into decimals.
1 3/5 = 1.6 and 14 1/2 = 14.5
I got .6 because 1/5 is 20%, 2/5 is 40%, (3/5 is 60%), and it keeps going.
Now that we have that all we have to do is 14.5 divided by 1.6
14.5 divided by 1.6 = 9.06
Hope this helps!
Using the binomial distribution, it is found that there is a 0.999977 = 99.9977% probability that at least one of them makes a Type I error.
<h3>What is the binomial distribution formula?</h3>
The formula is:
The parameters are:
- x is the number of successes.
- n is the number of trials.
- p is the probability of a success on a single trial.
In this problem:
- There are 25 students, hence n = 25.
- 70% do not commit any error, hence 30% do and p = 0.3.
The probability that at least one commits an error is given by:
In which:
Then:
There is a 0.999977 = 99.9977% probability that at least one of them makes a Type I error.
More can be learned about the binomial distribution at brainly.com/question/24863377
Answer:
C. 5/7
Step-by-step explanation: