3 years ago

I didn't know what to do here

Mathematics

1 answer:

slavikrds [6]3 years ago

7 0

Answer:

Step-by-step explanation:

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Feliz [49]

Answer:

1 1/4

Step-by-step explanation:

turn the 2 into decimals and then subtract and you get 1.25 and that aa a fraction is 1 1/4

7 0

3 years ago

5 movie tickets cost $55. At this rate, what is the cost per ticket?

Mariana [72]

Answer:

Step-by-step explanation:

55/5 equals 11

4 0

2 years ago

Read 2 more answers

Use the properties of logarithms to expand each logarithmic expression as much as possible. Where possible, evaluate logarithmic

seraphim [82]

Answer:

xvdsltoqk73jyeu54344y5eg62iuyeytmemymduememwu

6 0

3 years ago

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

Help pleaseee what are the answers to these questions??

WARRIOR [948]

huhhhhh where is the question

5 0

3 years ago

I didn't know what to do here​

I didn't know what to do here