Can someone me understand and solve this?

The angle just above 40 degrees angle = 1/2 * 70 = 35  making the 'double' angle at top = 35 + 40 = 75.  The 'double' angle opposite = 180 - 75 = 105 ( because  opposite angles of a cyclic quadrilateral add up to 180 degrees). Also the top angle of this one = 40 degrees ( because  2 equal sides  both subtend same angle).

So the bottom angle = 105-40 = 65 degrees.

Now x = this angle ( alternate segment theorem )

Therefore x = 65 degrees.

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

step-by-step explanation: