Can the sides of a triangle have lengths 3, 6, and 14?

Not a right triangle

Step-by-step explanation:

In a right triangle this statement is always true:

There for it isn't a right triangle.

Hope this helps.

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a negative exponent is translated as follows:

so, we have

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.