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anygoal [31]
3 years ago
12

Please answer both I'm really struggling with my homework

Mathematics
2 answers:
Alex Ar [27]3 years ago
4 0
1/64 & 16
hope that helped :)
agasfer [191]3 years ago
3 0

Answer:

  1. D. \frac{1}{64}  
  2. C. 16

Step-by-step explanation:

Second question:

  1. 2^{3} = 2 × 2 × 2 = 8
  2. Plug 8 in: 6 ÷ 3 × 8
  3. 6 ÷ 3 = 2
  4. Plug 2 in: 2 × 8 = 16

I hope this helps!

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Find the variance of this probability distribution. Round to two decimal places.​
attashe74 [19]

Answer:

Variance = 4.68

Step-by-step explanation:

The formula for the variance is:

\sigma^{2} =\frac{\Sigma(X- \mu)^{2}}{N} \\or \\ \sigma^{2} =\frac{\Sigma(X)^{2}}{N} -\mu^{2} \\

Where:

X: Values \\\mu: Mean \\N: Number\ of\ values

The mean can be calculated as each value multiplied by its probability

\mu = 0*0.4 + 1*0.3 + 2*0.1+3*0.15+ 4*0.05=1.15

\frac{\Sigma (X)^{2}}{N} =\frac{(0^{2}+1^{2}+2^{2}+3^{2}+4^{2})}{5} =6

Replacing the mean and the summatory of X:

\sigma^{2} = \frac{\Sigma(X)^{2}}{N} -\mu^{2} \\= 6 - 1.15^{2}\\= 4.6775

4 0
3 years ago
Which is bigger 0.3 or 3/8
maks197457 [2]
3/8 is 0.375, which is bigger than 0.3, so 3/8 is larger.
8 0
3 years ago
Read 2 more answers
At work jenine helps 6 customers every 40 minutes. How many customers can she expect to help in 240 minutes before her break?
Lady bird [3.3K]

Answer: 36 customers

Step-by-step explanation:

I'm pretty sure because you have to multiply 40 x 6 which is 240 and 6 x 6 which is 36 to get your answer.

7 0
3 years ago
Is -8.56 a rational or irrational number?
PolarNik [594]
Its a rational number
5 0
3 years ago
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Do the values in the table represent a proportional relationship?
Marianna [84]

Answer:

NOT proportional

Step-by-step explanation:

y/x  = 5/2 = 2.5

y/x = 6/3 = 2

also 7/4 = 1. 75 and 8/5 = 1.6  so:-

They are NOT proportional

5 0
3 years ago
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