Answer:
E(X) = 17.4
Step-by-step explanation:
We can calculate the expected value of a random X variable that is discrete (X takes specific values ) as:
E(X) = ∑xp(x) where x are the specific values of x and p(x) the probability associated with this x value.
In this way the expexted value is
E(X) = ∑xp(x) =(16*0.6)+(18*0.3)+(20*0.2) = 8+5.4+4 = 17.4
Answer:
3/4
Step-by-step explanation:
1/2 : 2/3
X : 3/3
3/4 : 3/3
Hey there! :)
In order to the find the missing side length of this triangle, we'll need to use the Pythagorean Theorem!
That equation is : a² + b² = c²
a = adjacent side
b = long side of rectangle
c = hypotenuse
We're already given the values of both a & c, so let's plug everything in!
a² + b² = c² → a = 10 , b = ? , c = 20
(10²) + b² = (20²)
Simplify.
100 + b² = 400
Subtract 100 from both sides.
b² = 400 - 100
Simplify.
b² = 300
Get the square root of b² & 300.
![\sqrt{b^2} = \sqrt{300}](https://tex.z-dn.net/?f=%20%5Csqrt%7Bb%5E2%7D%20%3D%20%20%5Csqrt%7B300%7D%20)
Simplify!
b = 17.3
So, the missing side length is the first answer choice : 17.3~Hope I helped!~
Im not smart but i think it is b. because there is no right angle
Answer:42
Step-by-step explanation:
V= 18 + 6(4)
V= 18 + 24
V= 42