Which statement best explains whether using a calculator or determining the solution by hand would be the most efficient way to fully simplify the expression Seven-ninths plus seven-ninths plus five-fifths minus 3? The fractions have different denominators, making the calculations time consuming to do by hand, so using a calculator will be more efficient. Adding and subtracting fractions with only two different denominators is always a quick calculation to perform by hand, so this expression can be easily simplified without the use of a calculator. The first calculation cannot be done quickly by hand, so using a calculator will be more efficient. The first two terms cancel each other out and the third term is equal to 1, so this expression can be easily simplified without the use of a calculator.

by hand because hand solution can be done by mind and can be written in copy but in calculator to solve one problem the first should delete but in copy we can write and remember.

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