Okay so the first thing we are going to do is change

into a improper fraction:

.

=224÷25=8.96

as a decimal is

.
They're just after some straightforward algebra starting from the Law of Cosine. We don't have to evaluate any trig functions or anything like that.

We move the c² and the cosine term to their other sides,

That's it for the algebra.
a,b and c are the side lengths opposite A,B and C respectively. So a=4, b=5, c=2.
We substitute:

Answer: A. 37
The answer is most likely a because if you calculate its better
It is 2,56 i think but i dont completely know thoe
Answer:
The standard deviation of the new data will be increased as compared to the previous standard deviation of the data.
Step-by-step explanation:
The prices are given to be : 59, 60, 65, 99, 175
Standard deviation = $49
Now, if we add or subtract any constant value to each of the terms then the standard deviation remains unchanged.
But, we add a new price in the given data that is $450

Hence, Standard deviation is calculated to be 139.5
Therefore, the standard deviation of the new data will be increased as compared to the previous standard deviation of the data.