Answer:

Step-by-step explanation:
Given



Required
The probability of selecting 2 same colors when the first is not replaced
The total number of ball is:


This is calculated as:

So, we have:

<em>Note that: 1 is subtracted because it is a probability without replacement</em>






This work is faster rate than grading 36 assignments in 30 minutes because :
25 ÷ 20 = 1.25
1.25 hw assignment per minute
36 ÷ 30 = 1.2
1.2 hw assignments per minute
Answer:
19+6x
Step-by-step explanation:
2×2+x+5x+15
4+6x+15
19+6x
If 1.5 and 2.5 are the height and base, then just use Pythagorean theorem,
Answer: 48 in 1 hour
Step-by-step explanation:
32 divided by 40 = 0.8
0.8 times 60 = 48
hope this helped you out :))