If i like a boy and he dont like me what should i do? If we like each other what should i do?

If he doesn't like you then hang out with him more but if he does then try to keep your cool

Explanation:

hope this helps

the best thing is to just tell him

Explanation:

its better to fail knowing that at least you tried and maybe youll be surprised to find that its only you who thinks he hates you while in real sense he actually likes you ..

if you both like each other then go for it life is too short to keep your feelings to yourself

which statement about this sum is true? −245+2.7

answer: the correct answer is 1.

explanation: there are various process in which a radioactive nuclei decays:

1) alpha decay: in this process, a heavier nuclei decays into lighter nuclei by releasing alpha particle. the mass number is reduced by 4 units.

2) electron capture: in this decay process, a parent nuclei absorbs an electron and gets converted into a neutron. simply, a proton and an electron combines together to form a neutron. mass number does not change in this process.

3) gamma ray emission: it is a decay process in which an unstable nuclei gives excess energy by a spontaneous electromagnetic process. this decay releases . this process does not change the mass number.

4) positron emission: it is a type of decay process, in which a proton gets converted to neutron and an electron neutrino. this is also known as -decay. in this the mass number remains same.

from the above information, we see that only alpha-decay is producing a change in the mass number of the nucleus.