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iren [92.7K]
3 years ago
6

May someone plz help me I would appreciate it

Mathematics
1 answer:
Lady bird [3.3K]3 years ago
4 0

Answer:

-5/2

Step-by-step explanation:

it not any of the rest if you have more questions just comment

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Parking spaces at a business school are arranged by a random monthly lottery. there are 3 spaces for every 10 students who want
Alexus [3.1K]

27.034%  
Let's define the function P(x) for the probability of getting a parking space exactly x times over a 9 month period. it would be: 
P(x) = (0.3^x)(0.7^(9-x))*9!/(x!(9-x)!)  
Let me explain the above. The raising of (0.3^x)(0.7^(9-x)) is the probability of getting exactly x successes and 9-x failures. Then we shuffle them in the 9! possible arrangements. But since we can't tell the differences between successes, we divide by the x! different ways of arranging the successes. And since we can't distinguish between the different failures, we divide by the (9-x)! different ways of arranging those failures as well. So P(4) = 0.171532242 meaning that there's a 17.153% chance of getting a parking space exactly 4 times. 
Now all we need to do is calculate the sum of P(x) for x ranging from 4 to 9.

So
 P(4) = 0.171532242
 P(5) = 0.073513818
 P(6) = 0.021003948
 P(7) = 0.003857868
 P(8) = 0.000413343
 P(9) = 0.000019683
  And
 0.171532242 + 0.073513818 + 0.021003948 + 0.003857868 + 0.000413343
+ 0.000019683 = 0.270340902 
 So the probability of getting a parking space at least four out of the nine months is 27.034%
5 0
3 years ago
( THE SUM OF THE MEASURES OF THE ANGLES BELOW IS 180* ) I will give brainlst for whoever gets this right and fills it out
Rufina [12.5K]

Answer:

2x-10+x+x+10=180, or 4x=180

Step-by-step explanation:

So since the total is 180, you add them all up like an equation.

So,

2x-10+x+x+10

Combine like terms

4x=180

x=45

Then plug it back in to the equations.

x=45

(2x-10)=80

(x+10)=55

5 0
3 years ago
Which mixed number is equivalent to the improper fraction
otez555 [7]

\dfrac{22}{7}=\dfrac{21+1}{7}=\dfrac{21}{7}+\dfrac{1}{7}\\\\=3\frac{1}{7}

3 0
3 years ago
SOMEONE PLEASE HELP ME!!!!!<br><br> Choices:<br> A: 35<br> B: 135<br> C: 45 <br> D:55
Sedbober [7]
The answer is 45, if you solve
8 0
3 years ago
Read 2 more answers
3. Order the integers from least to greatest. 6, 11, 16, –8, –5
Brums [2.3K]
Hello!

The numbers from least to greatest is -8, -5, 6, 11, 16

Hope this helps!
8 0
3 years ago
Read 2 more answers
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