Answer:
B. Variance = r2 = 0.7225
Step-by-step explanation:
Given the correlation coefficient, variance is obtained by squaring the correlation coefficient to obtain what is also know as coefficient of determination. Gives information on the predictive power of the model
Answer:
12x+30y
Step-by-step explanation:
6*2x+6*5y
12x+30y
Answer:
The rate of the slower cyclist is

and that of the faster cyclist is

Step-by-step explanation:
We let x be the rate of the slower cyclist

From the question, the distance between the two towns is 253 and the time taken for the two cyclist to meet is 5 hours
so we can write the equation

We simplify to get the value for x




Hence the rate of the slower cyclist is

and that of the rate faster cyclist is

Answer:
Yes, Tim was correct.
Step-by-step explanation:
It is given that Tim wrote 16 as (-2) squared 4. It means

We need to check whether he is correct option not.






Since LHS is equal to the RHS, therefore the Tim was correct.