Answer:
7 or 8
Step-by-step explanation:
This situation can be modeled with the Binomial Distribution which give the probability of an event that occurs exactly k times out of n, and is given by
where
= combination of n elements taken k at a time.
<em>p = probability that the event (“success”) occurs once
</em>
<em>q = 1-p
</em>
In this case, the event “success” is wanting a new copy of the book with probability 25% = 0.25 and n=30 students randomly chosen.
The expected value for a binomial distribution is the mean np, so in this case the expected value of the number of students who want a new copy of the book would be
np = 30*0.25 = 7.5
<em>To make sense of this value, we could say that 7 or 8 students out of 30 want a new copy of the book.
</em>
Answer:
hu ch icu of it them from an appointment tomorrow afternoon if that I think this morning for on Monday so many many many many many many many things about how the next year on and my car from Windows machine you a link I don't need it in person at home but a nice looking around you would know about getting better if he didn't make some
Step-by-step explanation:
the new email at that would it also be happy you would not a single person you need further discuss in touch about getting better if your business for more options of us with our conversation regarding in touch about getting better if your business for more
Answer:
69kc
Step-by-step explanation:
gctgd if hi ghoul h have n have n v video from guessing
Step-by-step explanation:
x² + 6x + 9 = 2
(x + 3)² = 2
x + 3 = ±sqrt(2)
x = -3 ± sqrt(2)
so, B and D are correct.
control :
(-3 + sqrt(2))² + 6(-3 + sqrt(2)) + 9 = 2
9 + 2 - 6sqrt(2) - 18 + 6sqrt(2) + 9 = 2
2 = 2
correct
(-3 - sqrt(2))² + 6(-3 - sqrt(2)) + 9 = 2
9 + 2 + 6sqrt(2) - 18 - 6sqrt(2) + 9 = 2
2 = 2
correct
(3 + sqrt(2))² + 6(3 + sqrt(2)) + 9 = 2
9 + 2 + 6sqrt(2) + 18 + 6sqrt(2) + 9 = 2
38 + 12sqrt(2) = 2
wrong.
(3 - sqrt(2))² + 6(3 - sqrt(2)) + 9 = 2
9 + 2 - 6sqrt(2) + 18 - 6sqrt(2) + 9 = 2
38 - 12sqrt(2) = 2
wrong.
Answer:
x = 8
Step-by-step explanation:
Chords AB and BD form an inscribed angle so <ABD = 5x
also given mAD = 80
Since inscribed angles are half the measure of their intercepted arc, angle <ABD is equal to 1/2(80 degrees), which is 40 degrees.
Now you have:
<ABD = 40
5x = 40
x = 8
Answer
x = 8