Answer:
Step-by-step explanation:
<u>Given</u>
<u>8 total balls</u>
- p(r and r) = 5/8*4/7 = 5/14
- p(b and b) = 3/8*2/7= 3/28
<u>Added up</u>
- 5/14 + 3/28 = 10/28 + 3/28 = 13/28
Probability of 2 same colored balls is 13/28
Answer:
I don't know how to do it the subject
Its wrong for x = 2
y = (3/4) * 2^2 = 3 (NOT 4)
The first thing we must do for this case is to define variables: x: number of tickets sold before the tournament. y: number of tickets sold at the door. The system of equations that adapts to this situation is given by: x + y = 820 x-y = 80 Answer: The correct options are: option 2 option 3 option 5
Answer:
20
Step-by-step explanation:
Let x represent the number of movies bought/downloaded
3x + 10 = 2x +30
Subtract 2x and 10 from both sides
x = 20
