Dyan wants to buy a book for $16.95 and a magazine for $4.50. about how much will he need to buy the items without having to round down to the nearest benchmark

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

the answer is

d.

5.3066 m2

step-by-step explanation:

assuming "divided his salary into two" means in half,

he has 215 remaining, plus 200 he originally had before buying a watch

he originally has $415 in his personal account

if this is half the salary, 415 times 2 is $830

his salary would have been $830.