Simplify. 10y(3x – 7z)
is it
1)30 xy – 7 z
2)103 xy – 107 yz
3)30 xy – 70 yz
4)3 x – 70 yz

The answer is 30xy - 70yz

Step-by-step explanation:

Distribute

10y × 3x + 10y × -7z

Simplify 10y × 3x to 30yx

30yx + 10y × -7

Simplify 10y × -7z to -70yz

30xy - 70yz

A. 30xy - 70yz

Hope this helps!!

the difference between a number and 5 is -2.

step-by-step explanation:

notice that the equation you are given has -2 (negative 2) on the right side, not 2. when you subtract 5 from a number n, you are finding the difference between the number and 5.

the difference between a number and 5 is -2.

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