Answer:
$4
Step-by-step explanation:
Here is what you can do.
18 / 9 = 2 times 2 = 4 Why.
Because you have to for each week you need to start with the first week so you can get common denominators 4/18 to 18 cross out the 18’s and you got an answer
Answer:

Explanation:
You need to find the probability that exactly three of the first 11 inspected packages are damaged and the fourth is damaged too.
<u>1. Start with the first 11 inspected packages:</u>
a) The number of combinations in which 11 packages can be taken from the 20 available packages is given by the combinatory formula:


b) The number of combinations in which 3 damaged packages can be chossen from 7 damaged packages is:

c) The number of cominations in which 8 good packages can be choosen from 13 good pacakes is:

d) The number of cominations in which 3 damaged packages and 8 good packages are chosen in the first 11 selections is:

e) The probability is the number of favorable outcomes divided by the number of possible outcomes, then that is:

Subsituting:


<u>2. The 12th package</u>
The probability 12th package is damaged too is 7 - 3 = 4, out of 20 - 11 = 9:
<u>3. Finally</u>
The probability that exactly 12 packages are inspected to find exactly 4 damaged packages is the product of the two calculated probabilities:

Answer: 1. B 10(15 12 + 8) = 350
2. C
Step-by-step explanation:
Answer:
1/25
Step-by-step explanation:
There are 100 cm in a meter.
100 x 2(metres) = 200
8/200 cm
Now, simplify:
4/100 -> 2/50 -> 1/25
1/25