P=44+66+88/2=198/2=99
With Heron formula:
S=root 99*(99-44)(99-66)(99-88)=root 99*55*33*11=root 1976535= 1405.8929.....=1405.9
Answer:
Is there supposed to be a photo? Or attachment?
Step-by-step explanation:
Answer:

And the best answer on this case would be:
b) m = 4.635
Step-by-step explanation:
Let X the random variable of interest and we know that the confidence interval for the population mean
is given by this formula:

The confidence level on this case is 0.9 and the significance 
The confidence interval calculated on this case is 
The margin of error for this confidence interval is given by:

Since the confidence interval is symmetrical we can estimate the margin of error with the following formula:

Where Upper and Lower represent the bounds for the confidence interval calculated and replacing we got:

And the best answer on this case would be:
b) m = 4.635
The top left is the correct answer, because the sides are parallel.
Hope this helps!
Answer and Step-by-step explanation:
is pi, or 3.14159
The absolute value of -4 ( |-4| ) is 4.
These numbers should go in this order:
-10 < 0.121212... <
< |-4| < 
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