I think it’s v=-20 i showed you my work if that helps :)
3.124 * 10^-4
since your decimal is coming forward you need the exponent to be negative
All right triangles have at least 1 angle that is 90 degrees total. (It might be late for the answer sorry...)
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Explanation:</h2>
See the figure below for a better understanding of the problem. Since we have a 45-45-90 triangle, this is an isosceles triangle, so both the adjacent and opposite sides measure the same value, say, x. Then the hypotenuse would be:

Then. the ratio of the length of the hypotenuse to the length of a side is:

I think u should use photo math bc that look like it would help and it should help u if u hold phone over it