![subject](/tpl/images/cats/mat.png)
Mathematics, 21.12.2019 20:31 ExclusiveNay
Suppose a multiple choice test has 20 questions with each question having 4 choices, only one of which is correct that is %25. suppose an unprepared student writes the answers, each time randomly picking on the 4 choices. what is the probability that the student will get
a) exactly 4 answers correct
b)all the answers incorrect
c) at least 8 correct
d) what is mean and the standard deviation
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 20:00
In new york city at the spring equinox there are 12 hours 8 minutes of daylight. the longest and shortest days of the year very by two hours and 53 minutes from the equinox in this year the equinox falls on march 21 in this task you use trigonometric function to model the hours of daylight hours on certain days of the year in new york city a.what is the independent and dependent variables? b.find the amplitude and the period of the function. c.create a trigonometric function that describes the hours of sunlight for each day of the year. d. graph the function you build in part c. e. use the function you build in part c to find out how many fewer daylight hours february 10 will have than march 21. you may look at the calendar.
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 22:30
I’ve been trying all day to figure this puzzle out. i need the work for it aswell. it is a factoring polynomials tarsia. the image is below.
Answers: 3
You know the right answer?
Suppose a multiple choice test has 20 questions with each question having 4 choices, only one of whi...
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 14.03.2020 21:54
![question](/tpl/images/cats/mat.png)
Mathematics, 14.03.2020 21:54
![question](/tpl/images/cats/himiya.png)
Chemistry, 14.03.2020 21:54
![question](/tpl/images/cats/biologiya.png)
Biology, 14.03.2020 21:54
![question](/tpl/images/cats/mat.png)
Mathematics, 14.03.2020 21:55
![question](/tpl/images/cats/fr.png)
French, 14.03.2020 21:55
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 14.03.2020 21:56
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 14.03.2020 21:57
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 14.03.2020 21:57
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
History, 14.03.2020 21:57
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 14.03.2020 21:57