Next time you post a question, break it up into a couple of questions. If you don't want to do that use paragraphs and finally, if that doesn't suit you add more points -- Please. No offense intended. the please is genuine.
1. A triangle = 180o. If one is 90, the other 2 will be a total of 90o
Answer C: <<<====
2. A looks like the correct answer. 30 + 100 = 130 ; 180 - 130 = 50
3. You need a diagram to get the third one.
The slope of the line is 5/9.
Answer:
The best estimate of the number of times out of 39 that Ariana is on time to class is 27.
Step-by-step explanation:
For each class, there are only two possible outcomes. Either Ariana is on time, or she is not. The probability of Ariana being on time for a class is independent of other classes. So we use the binomial probability distribution to solve this question.
Binomial probability distribution
Probability of exactly x sucesses on n repeated trials, with p probability.
The expected value of the binomial distribution is:
The probability that Ariana is on time for a given class is 69 percent.
This means that
If there are 39 classes during the semester, what is the best estimate of the number of times out of 39 that Ariana is on time to class
This is E(X) when n = 39. So
Rounding
The best estimate of the number of times out of 39 that Ariana is on time to class is 27.
Answer:
b and d
Step-by-step explanation: