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heather has a stack of lettters to mail she buys a sheet of 37-cent stamps for $7.40 one letter two stamps the rest take one stamp each how many letters can she mail
a.10
b.19
c.20
d.25

7.40/0.37 = 20 stamps were bought

 1 letter uses 2 stamps

20-2=18 stamps left

 so she can male 18+1 = 19 letters

hi there!

the answer will be d: 2

step-by-step explanation:

we can use this expression to calculate the energy gain as a particle moves with a field or the energy loss as it moves against it. (note that it is also used to define the electron-volt, a unit of energy equal to that gained by an electron as it falls through a pd of 1 v, i.e. w = 1 ev = 1.6 10-19 c 1 v = 1.6 10-19j).in fact this expression is really nothing more than the statement that potential is the potential energy per unit charge. in this case, v= w/qis simply stating that the change in potential energy(or work done) per unit charge is equal to the change in potential (or potential difference), v.student questions: uniform electric fields2electron beamcathode+5 kvanode0 v