The answer is 336
The reason is because you have to times 12 x 28
Answer:
Option B
Step-by-step explanation:
As per the question:
The variance of the 48 Econ 202, = 16 inches
The variance of 63 Econ 203 = 14 inches
Now, to test the variance of two populations:
For 48 Econ 202:

For 63 Econ 203:

On comparing the two, the test statistics is given by;
F = 
F = 
Answer: £30.31
Explanation:
100/140 minutes of calls were free. Then, 40 x .09, which is 3.6
61 non-free texts, costing 11p each. So... 61 x .11 = 6.71
Add those together, with 20.
Find the depth of the river at 9 hours and 18 hours by seeing where the line is on the Y axis.
At 9 hours the river is 18 feet deep
At 18 hours the river is 21 feet deep.
The average rate of change is the change in Y over the change in X
The Y is the depth and the X is the time:
(21-18) / (18-9) = 3/9 = 1/3 = 0.33
The average rate of change is 0.3 foot per hour. ( Rounded to nearest tenth)
3? I think is the answer for this