Once you combine it, you get 10w + 18
By definition of conditional probability,
P(B | A) = P(A ∩ B)/P(A) = (13/25) / (13/20) = 20/25 = 4/5
Answer:neither
Step-by-step explanation:
<h3>Solution :</h3>
Distance between first tree and last tree is 140m .
And distance between each tree (d) = 5 m
let's solve for number of trees (n) :
![\hookrightarrow \: (n - 1)d = 140](https://tex.z-dn.net/?f=%20%5Chookrightarrow%20%5C%3A%20%28n%20-%201%29d%20%3D%20140)
![\hookrightarrow \: (n - 1)5 = 140](https://tex.z-dn.net/?f=%20%5Chookrightarrow%20%5C%3A%20%28n%20-%201%295%20%3D%20140)
![\hookrightarrow \: n - 1 = \dfrac{140}{5}](https://tex.z-dn.net/?f=%20%5Chookrightarrow%20%5C%3A%20n%20-%201%20%3D%20%20%5Cdfrac%7B140%7D%7B5%7D%20)
![\hookrightarrow \: n = 28 + 1](https://tex.z-dn.net/?f=%20%5Chookrightarrow%20%5C%3A%20n%20%3D%2028%20%2B%201)
![\hookrightarrow \: n = 29](https://tex.z-dn.net/?f=%20%20%5Chookrightarrow%20%5C%3A%20n%20%3D%2029)
hence, total number of trees = 29.