Simplify the expression.
8+4a+6.2−9a =

It would be 14.2+-5a

Step-by-step explanation:

It would be that because first, u have to add all the numbers with the same variable ad 8 and 4a don't have the same variable, and as you can see the addition sign on 6.2 and they have the same variable so it would be 14.2. Then you would have to find the value of s so 4.2 u wouldn't add it with 9a even though it has the same variable  you have to subtract because it has a subtraction sign above it so since 4a came first u subtract 9a from 4a which would give u -5a.

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

(2,6)

step-by-step explanation:

cause i just did this and got the answer

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