Answer:
15 students per teacher
10 students per tutor
11 tutors
Step-by-step explanation:
75/5=15
60/6=10
110/10=11
Time the -2 to p and -5 to get -2p+10+7p=-5
subtract the ten from both side getting -2p+7p=-15
if you add -2 to 7 it would be 5 getting 5p=-15
then you divide 5 from both sides getting p= -3
p =-3 is the correct answer
The answer is 7.
there you go!
Answer:
option d is right
Step-by-step explanation:
x2+y2+2ax+2by+a2+b2=-m2
I thinks it's right
Answer:
Probability that the fifth ball selected is red = 0.705
Step-by-step explanation:
Let
= Number of red balls after the 4th turn
⇒ ∈ { 0, 1, 2 }
Then,
P = ![\left[\begin{array}{ccc}0.8&0.2&0\\0.1&0.8&0.1\\0&0.2&0.8\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D0.8%260.2%260%5C%5C0.1%260.8%260.1%5C%5C0%260.2%260.8%5Cend%7Barray%7D%5Cright%5D)
⇒![P^{4} = \left[\begin{array}{ccc}0.487&0.435&0.776\\0.218&0.565&0.218\\0.776&0.435&0.487\end{array}\right]](https://tex.z-dn.net/?f=P%5E%7B4%7D%20%3D%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D0.487%260.435%260.776%5C%5C0.218%260.565%260.218%5C%5C0.776%260.435%260.487%5Cend%7Barray%7D%5Cright%5D)
Now,
P(5th ball is red | 
= 2 ) = 0. 
+ 
= 
= 0.705
∴ we get
Probability that the fifth ball selected is red = 0.705
