Answer:
FALSE
Explanation:
Because C1 and C2 implement the same interface, they both implement whichIsIt. The variable c is known as a polymorphic variable, meaning that it can change from being an C1 to a C2. So, the message c.whichIsIt( ); may invoke C1's whichIsIt or C2's whichIsIt. This can only be known at runtime.
Answer:
Instantiate the object and access the variable using object reference.
Explanation:
In order to use/access an instance variable in a class, the class needs to be instantiated.For example:
class Demo{
//Instance variable declaration
int testvar=0;
public static void main(String args[]){
//Class instantiation
Demo d = new Demo();
// The instance variable is accessed using the object reference
d.testvar = 1;
}
}
In case the instance variable in private then it can be accessed using its corresponding getter/setter methods.
Answer: PLC uses:
1. Decimal Number system
2. Binary Number system.
3. Octal Number system.
4. Hexadecimal Number system.
5. Binary Coded Decimal Number system.
6. Negative Number system.
7. Number Conversations.
Explanation: The other numbers the Programmable Logic Controller(PLC) uses aside the decimal number system are:
1. Binary Number system.
2. Octal Number system.
3. Hexadecimal Number system.
4. Binary Coded Decimal Number system.
5. Negative Number system.
6. Number Conversations.
Answer:
x=1
Explanation:
Re-run your installer (e.g. in Downloads, python-3.8. 4.exe) and Select "Modify". Check all the optional features you want (likely no changes), then click [Next]. Check [x] "Add Python to environment variables", and [Install]
A linear regression model is used to show the relationship between variables on a scatter plot
The equation of the linear regression model is: 
and the correlation coefficient is 0.8034
<h3>How to determine the equation of the
linear regression</h3>
The question is incomplete. So, I will make use of a dataset that has the following calculation summary (from a graphing calculator)
- Sum of X = 45
- Sum of Y = 83
- Mean X = 4.5
- Mean Y = 8.3
- Sum of squares (SSX) = 82.5
- Sum of products (SP) = 128.5
- The value of R is 0.8034.
The equation of the linear regression model is:
See attachment for the scatter plot
Read more about linear regression model at:
brainly.com/question/26347582
