Answer: b. helium nucleus
Helium nucleus is the particle that is being emitted in an alpha radiation. This helium nucleus then transforms and becomes decays that are also known as alpha decays. The alpha particle maybe similar to helium nucleus however, it does not have electrons surrounding it.
The money collected during the second week was : 840
<h3>Determine the amount collected </h3>
Analysis:
Total number of persons.
number of persons that paid first week = 12
number that paid second week = 62 - 12 = 50
if each person is to pay 16.40, then 50 people would pay = 16.4 x 50 = 840 dollars.
Hence we can conclude that The money collected during the second week was : 840
Learn more about gym membership : brainly.com/question/2516040
#SPJ1
Lets put ti this way:
P[1st serve good & wins point] = 60% * 70% = 42% = A
<span>P[2nd serve good & wins point] = 40% * 76% *57% = 17.328% = B </span>
<span>1. P[win point] = A+B = C = 59.328% <------- </span>
<span>2. P[1st serve good | win point ] = A/C = 42 / 59.328 = 0.707 or 70.7%
Please </span><span>remember that 2nd serve come into use only if 1st serve is not good</span>
