ASAP need answer
When is a scientific theory formed?

when a hypothesis is given a repeated exposure to experimentation and is not falsified it increases the confidence of biologist's on that hypothesis such hypothesis form the basis of formulating further hypothesis which are then experimentally proved.The hypothesis that stand the test of time often tested and never rejected are called theory.A theory can be denied by further observations.

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

the answer is 0.42 is that is an option. this question provides no info