Answer:
13
Step-by-step explanation:
Pythagreom Therom:
a^2+b^2=c^2
12^2+5^2=c^2
144+25=c^2
169=c^2
c=13
351.3 you can use calculators you know lol
Using the arrangements formula, considering the given digits, it is found that Edward writes 6 numbers.
<h3>What is the arrangements formula?</h3>
The number of possible arrangements of n elements is given by the factorial of n, that is:
![A_n = n!](https://tex.z-dn.net/?f=A_n%20%3D%20n%21)
In this problem, the first digit has to be 5, while the other three are arranged, hence the total number of arrangements is given by:
![A_3 = 3! = 6](https://tex.z-dn.net/?f=A_3%20%3D%203%21%20%3D%206)
More can be learned about the arrangements formula at brainly.com/question/25925367
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I don't think its possible to do this... you have to have 2 equations
200 x 0.99. Or you can do 200/100 which is 2. then multiply that by 99 which gets you 99 which is 198.