3 years ago

What is the Answer to four times four

Mathematics

2 answers:

34kurt3 years ago

7 0

16 is the answer to this question.

vichka [17]3 years ago

5 0

The answer is 16

Hope this helps :D

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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:

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

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3 years ago

What is the answer to -2 (6n-5) = 26? PLEASE ANSWER CORRECTLY

ipn [44]

This is the answer!! Also I use Photomath to help with my hw!

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3 years ago

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Write an expression to express y in terms of x use your equation to complete the table

Fittoniya [83]

Answer:

The answer is 1

Step-by-step explanation:

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2 years ago

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Dairon needs 20 pieces of string 3/8 inch in length. He cut a 4 7/8 inch piece of string into pieces that are 3/8 of an inch lon

kramer

The 4 7/8 = 39/8 = 13 pieces of string, he needs 20 so he will need to cut 7 more pieces

8 0

3 years ago

the width of a rectangle is 9m less than it's legnth if the perimeter of the rectangle is 54m find the legnth of the garden

Nata [24]

Perimeter of rectangle = 2(l+w)

So, 54cm = 2(l+9cm)

=> 54cm = 2l + 18cm

=> 54cm - 18cm = 2l

=> 36cm = 2l

=> 36cm/2 = l

=> 18cm = l

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3 years ago