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The distance between the points (x, 21) and (4, -7) is 20√2. Find the sum of all possible values of x.

 Mar 23, 2021
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The distance between the points (x, 21) and (4, -7) is 20√2. Find the sum of all possible values of x.

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sqrt[(20√2)2 - (21 + 7)2] = 4

 

x can be either 0 or 8

 

So, the sum of all possible values of x = 8

 Mar 23, 2021

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