At a sale, dresses were sold for $34 each. This price was 85% of a dress's original price. How much did a dress originally cost?

The original price was $40

Step-by-step explanation:

let x = original price

34= 0.85x

Divide both sides by 0.85

34/0.85 = x

40 = x

Check:

0.15 × 40 = 6

40 – 6 = 34

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