Three displacement vectors have lengths 1 m, 2 m, and 4 m. could they possibly add together to get a vector of length zero?

No.

If they add together to get a vector of length zero they should make a triangle of loading.

The sides 1 m, 2 m and 4 m will not make a triangle since the sum of 1 and 2 is less than 4.

In the given figure a+b < c , so they make a triangle.

Here this condition is not satisfied.

the cellphone, they would then know if the killer would have contacted them or always hated them. or if it was a breakup. but if that is not the case, then it would be the clothing. to put in a bullet, it would have to be put in by hands. hands have finger prints which, would have giving you the answer of who done it.

explanation:

the second one and the forth one are in the purple because they are opinions and the rest are in the yellow

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