There's no problem so we can't answer it
The astronomy club will have to wash 66 cars because 327.19 divided by 5.00 is 65.438 and rounded would be 66 cars that need to be washed
Answer:
2x
Step-by-step explanation:
These are like terms so we can combine them
4x-2x
2x
Answer:
P=0.0899.
Step-by-step explanation:
We know that are 5 black balls and 9 red balls in an urn. If 4 balls are drawn without replacement. We calculate the probability that exactly 3 black balls are drawn.
Therefore, we have 14 balls in an urn.
We calculate the number of possible combinations:
![C_4^{14}=\frac{14!}{4!(14-4)!}=1001\\](https://tex.z-dn.net/?f=C_4%5E%7B14%7D%3D%5Cfrac%7B14%21%7D%7B4%21%2814-4%29%21%7D%3D1001%5C%5C)
We calculate the number of favorable combinations:
![C_3^5\cdot C^9_1=10\cdot 9=90](https://tex.z-dn.net/?f=C_3%5E5%5Ccdot%20C%5E9_1%3D10%5Ccdot%209%3D90)
Therefore, the probability is:
P=90/1001
P=0.0899.