Kylee’s first three test scores are 81, 75, and 77. what must kylee score on the next test to raise the average to 80?

Kylee must get an 87 on her next test to raise her average grade to 80.

Step-by-step explanation:

Her previous tests average: 81+75+77=233

233÷3=77.7

If she gets a 87 on her next test, it averages: 81+75+77+87=320

320÷4=80

your answer would be 12

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