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4 years ago

9

i have 811 handkerchief in all,and need 25 for one quilt. How many quilts can I make and how many handkerchief will be left over

?

1 answer:

leva [86]4 years ago

4 0

Answer: 32 Quilts and you will have 11 squares left over

Step-by-step explanation:

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PRACTICE ANOTHER Calculate the standard deviation σ of X for the probability distribution. (Round your answer to two decimal pla

nataly862011 [7]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The standard deviation is $\sigma = 1.17$

Step-by-step explanation:

From the question we are told that

The data is

x 1 2 3 4

P(X = x) 0.2 0.2 0.2 0.4

Generally the standard deviation is mathematically represented as

$\sigma = \sqrt{ \sum x^2 P(x) - (\sum x P(x))^2 }$

Here $x^2 = 1^2 \ \ 2^2 \ \ 3 ^2 \ \ 4^2$

=> $x^2 = 1 \ \ 4 \ \ 9\ 16 \$

$\sum x^2 * P(x) = (1 * 0.2) + (4 * 0.2 ) + (9 * 0.2 ) + (16 * 0.2 )$

$\sum x^2 * P(x) = 9.4$

$\sum x P(x) = (1 *0.2) + (2*0.2) + (3 * 0.2) + (4 * 0.2)$

$\sum x P(x) = 2.8$

So

$\sigma = \sqrt{ 9.2 - (2.8)^2 }$

$\sigma = 1.17$

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3 years ago

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Mars2501 [29]

Answer:

2, -5

Step-by-step explanation:

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3 years ago

Which value of x is a solution to the open sentence.

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3*6>2*6+5

18>17

6 is the answer

.............

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Check the picture below

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