(19 points question, ) a bag contains 5 blue balls, 4 red balls, and 3 orange balls. if a ball is picked from the bag at random, what is the probability that it is a blue ball? answers have been rounded to the tenths place. a. 0.5 b. 0.4 c. 0.3 d. 0.2

B.  0.4

Step-by-step explanation:

5 + 4 + 3 = 12 balls

5 blue / 12 balls = 0.4

B

Step-by-step explanation:

1.) Calculate the percentage that blue balls make of the bag. First, add the balls together.

5 + 4 + 3 = 12

2.) Divide 100 / 12.

100 / 12 ≈ 8.3

3.) Multiply 8.3 by the number of blue balls.

8.3 * 5 ≈ 40

4.) Convert the percentage to decimal form.

40 / 100 = 0.4

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