Solution:
Given:
The function,
![f(x)=-2x(x-1)(x-8)](https://tex.z-dn.net/?f=f%28x%29%3D-2x%28x-1%29%28x-8%29)
The domain of a function is the set of all possible inputs for the function's output to become real and defined.
From the function given, the function has no main constraint or undefined point when we input all real values of x. This means the function is defined for all real values of x.
Therefore, since there is no constraint to make the function undefined, the domain is all real values of x.
Thus,
Step-by-step explanation:
6/=14000
6x140
840x7
5880
The answer is "c. continuous probability distribution."
"Continuous" means it is a subset of the real numbers set: it can take any value in a specified range. For example, if you break at random a stick with a given length of 12 cm, and then measure the shortest piece, you can get any value in the range (0 cm, 6 cm). This is a continuous random variable.
A random variable is said to be "discrete" if it can only take values from a finite (or countably infinite) set. For example, if you roll a dice, you can get only 1, 2, ..., 6. But you cannot get any vaue in the range [1, 6], because the value must be an integer (e.g., you cannot get the vaue 2.5). This is a discrete random variable.
A somewhat technical explanation:
- A random variable is a mapping from a event space to a number set: it associates a number (a value of the variable) with every event.
- The random variable is said to be continuous if it maps events to numbers from a subset of the set of real numbers.
- The probability distributions corresponding to continuous random variables are called continuous probability distributions.
Answer:
2000 children
Step-by-step explanation:
Total number of children= 1268+982=2250
9u=2250
1u=2250÷9=250
Number of children who did not win any prizes= 250×8=2000