If 7x+2=5x, what is the value of -x?

x = -1

Step-by-step explanation:

We must solve 7x+2=5x for x.  To do this, subtract 5x from both sides:

2x + 2 = 0, or

2x = -2, or

x = -1

The solution is x = -1.

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

14.29%

step-by-step explanation: