Michelle finally landed her first job after college and it provides insurance. she had surgery on her knee that she was told would be covered by her insurance, but now she has received a bill from the hospital saying the insurance did not pay it. she called the insurance company and they said it has been paid, but the hospital billing department tells her they never received payment. who should michelle contact next for with resolving this matter?

51

step-by-step explanation:

73-22=51 the   mass number minus the amount of protons gives you the amount of neutrons

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4