Stop giving me links and HELP ME. I will mark BRAINLIEST x=3y-4
2x-y=7
Use substitution and elimination method

y = 3

Step-by-step explanation:

substitute the x in 2x - y = 7 by x = 3y - 4 and then solve

2(3y - 4) - y = 7

Distribute the 2 into the parenthesis

6y - 8 -y = 7

combine like terms

5y - 8 = 7

add 8 on both sides

5y = 15

divide by 5 on both sides to isolate the y-value

y = 3

a. 12.5 kg

step-by-step explanation:

f = ma

so

m = f/a = (2500 n)/(200 m/s²) = 12.5 kg

1 n = 1 kg·m/s²

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