We will be using the fact that
, where
is the probability that the first bulb works and
is the probability that the second bulb works.
The probability that the first bulb works is
. However, when we take one out (given that the first bulb works) we now have 19 working bulbs and 4 bad ones. This means that the probability that the second bulb works is
.
Now, we can find our final probability:
![\dfrac{5}{6} \cdot \dfrac{19}{23} = \boxed{\dfrac{95}{138}}](https://tex.z-dn.net/?f=%20%5Cdfrac%7B5%7D%7B6%7D%20%5Ccdot%20%5Cdfrac%7B19%7D%7B23%7D%20%3D%20%5Cboxed%7B%5Cdfrac%7B95%7D%7B138%7D%7D%20)
Answer:
70%
Step-by-step explanation:
Nick now: 8
Jonas now: 14
Nick in 6 years: 8 + 6 = 14
Jonas in 6 years: 14 + 6 = 20
percent = part/whole × 100%
percent = 14/20 × 100%
percent = 0.7 × 100%
percent = 70%
Answer:
{2, 6}
Step-by-step explanation:
Subset: A subset is a set of which all the element are contained or can be find in the universal set.
From the question above,
μ = {1,2,4,5,6}
* The first option {0,1,2} is wrong because 0 is not contained in the universal set.
* The second option {3,4} is wrong because, 3 is not contained in the universal set.
* The third option {5,6,7} is wrong because 7 is not contained in the universal set.
* The last option {2,6} is correct because all of the element of the set are contained in the universal set, and as such makes it a subset.
Hence the subset of {1,2,4,5,6} is {2, 6}
Answer:
33
Step-by-step explanation:
if she worked three more than twice as many hours as gary worked we can subtract 3 for 48 which leaves 45. she worked twice as many hours as he did and 45 is perfectly devisable by 3 at 15 so she worked 30 hours plus 3 while gary only worked 15 hours. This could be wrong but i dont think it is :)