Answer:
1.8
Step-by-step explanation:
So, we can say that the square root of 3.24 is 1.8 with an error smaller than 0.001 (in fact the error is 0.0000276241). this means that the first 4 decimal places are correct. Just to compare, the returned value by using the javascript function 'Math. sqrt(3.24)' is 1.8
0.4 inches because of the scale
Step-by-step explanation:
The number of subsets=2ⁿ where n=4 members
2ⁿ=2⁴=16
Number of proper subsets=2ⁿ-1
16-1=15
Answer:
a) Option D) 0.75
b) Option D) 0.3
Step-by-step explanation:
We are given the following in the question:
Percentage of students who choose Western riding = 35%
![P(w) = 0.35](https://tex.z-dn.net/?f=P%28w%29%20%3D%200.35)
Percentage of students who choose dressage= 45%
![P(d) = 0.45](https://tex.z-dn.net/?f=P%28d%29%20%3D%200.45)
Percentage of students who choose jumping = 50%
![P(j) = 0.50](https://tex.z-dn.net/?f=P%28j%29%20%3D%200.50)
Percentage of students who choose both dressage and jumping = 20%
![P(d \cap j) = 0.20](https://tex.z-dn.net/?f=P%28d%20%5Ccap%20j%29%20%3D%200.20)
Percentage of students who choose Western and dressage = 10%
![P(w \cap d) = 0.10](https://tex.z-dn.net/?f=P%28w%20%5Ccap%20d%29%20%3D%200.10)
Percentage of students who choose Western and jumping = 0%
![P(w \cap j) = 0](https://tex.z-dn.net/?f=P%28w%20%5Ccap%20j%29%20%3D%200)
Thus, we can say
![P(w \cap j \cap d) = 0](https://tex.z-dn.net/?f=P%28w%20%5Ccap%20j%20%5Ccap%20d%29%20%3D%200)
Formula:
![P(A \cup B) = P(A) + P(B) - P(A \cap B)](https://tex.z-dn.net/?f=P%28A%20%5Ccup%20B%29%20%3D%20P%28A%29%20%2B%20P%28B%29%20-%20P%28A%20%5Ccap%20B%29)
a) P(student chooses dressage or jumping)
![P(d \cup j) = P(d) + P(j) -p(d \cap j)\\= 0.45 + 0.50-0.20 = 0.75](https://tex.z-dn.net/?f=P%28d%20%5Ccup%20j%29%20%3D%20P%28d%29%20%2B%20P%28j%29%20-p%28d%20%5Ccap%20j%29%5C%5C%3D%200.45%20%2B%200.50-0.20%20%3D%200.75)
b) P(student chooses neither dressage nor Western riding)
![= 1 - P(d \cup w)\\= 1 - (P(d) + P(w) - P(d \cap w))\\= 1 - (0.45 + 0.35 - 0.10)= 0.3](https://tex.z-dn.net/?f=%3D%201%20-%20P%28d%20%5Ccup%20w%29%5C%5C%3D%201%20-%20%28P%28d%29%20%2B%20P%28w%29%20-%20P%28d%20%5Ccap%20w%29%29%5C%5C%3D%201%20-%20%280.45%20%2B%200.35%20-%200.10%29%3D%200.3)
e 95,970 l dont know any work just looked it up sorry