Answer:
1/9
Step-by-step explanation:
The answer is 1/9 because we already know the only even number on the spinner is 8. We have a 1/3 chance on landing on 8. Then it says we have to land on 7. There is also a 1/3 chance for landing on 7. So from this information, we do (1/3)*(1/3)=1/9
Answer: Our required probability is 0.11.
Step-by-step explanation:
Since we have given that
Number of workers in first shift = 21
Number of workers in second shift = 15
Number of workers in third shift = 13
We need to find the probability of choosing exactly two second shift workers and two third shift workers.
So, it becomes,
![\dfrac{^{15}C_2\times ^{13}C_2\times ^{21}C_4}{^{49}C_8}\\\\=0.11](https://tex.z-dn.net/?f=%5Cdfrac%7B%5E%7B15%7DC_2%5Ctimes%20%5E%7B13%7DC_2%5Ctimes%20%5E%7B21%7DC_4%7D%7B%5E%7B49%7DC_8%7D%5C%5C%5C%5C%3D0.11)
Hence, our required probability is 0.11.
Answer:
y = 29/4
Step-by-step explanation:
It is given that,
3/(y - 5) = 15/(y + 4)
<u>To find the value of y</u>
we have,
3/(y - 5) = 15/(y + 4)
3(y + 4) = 15(y - 5)
(y + 4) = 5(y - 5) [dividing both sides by 3]
y + 4 = 5y - 25
5y - 25 = y + 4
5y - y = 4 + 25
4y = 29
y = 29/4
Therefore the value of y = 29/4