Answer:
The coefficient of correlation=0.5
Step-by-step explanation:
We are given that
Covariance between the variable x and y=18
Variance of x=16
Variance of y=81
We have to find the coefficient of correlation
We know that
Coefficient of correlation
Using the formula
Hence, the coefficient of correlation=0.5
These are the points graphed:
Are they equal? Yes.
2n^2/6^2+10n-1
Step-by-step explanation:
(6-n)(6+n)-(6+n)(6+n)/(6+n)(6+n)-(1-n)(1+n)
We conclude that Michael worked for a total of 11.46 hours in the weekend.
<h3>How much time did he work on the weekend?</h3>
We know that during the weekend, the times that he used for each task are:
- (6 + 3/7) hours to do his homework.
- 4.37 hours to clean his room.
- 2/3 hours to walk the dog
The total time is given by the sum between the above numbers, where the difficulty is the fact that the 3 numbers are in different notations (decimal, fraction, and mixed).
The sum is:
S = (6 + 3/7) h + 4.37 h + 2/3 h
The easier way to do this, is to write the 3 numbers in decimal form:
2/3 = 0.66
6 + 3/7 = 6 + 0.43 = 6.43
Then the total time is:
S = 6.43 h + 4.37h + 0.66h = 11.46 h
We conclude that Michael worked for a total of 11.46 hours in the weekend.
If you want to learn more about sums:
brainly.com/question/17695139
#SPJ1
We know that
if small <span>snail moves 1/50 miles in ---------------> 5/6 of an hour
</span>then
X miles in-------------------------------------> 1 hour
X=(1/50)/(5/6)------> 6/(50*5)------> x=0.024 miles
0.024------> 24/1000-------> 12/500-----> 6/250-----> 3/125 miles
the answer is
3/125 miles (0.024 miles)
