3 years ago

Which list of decimals is not in descending order?

Mathematics

2 answers:

almond37 [142]3 years ago

6 0

The last one is not in descending order because the numbers are getting bigger as you move along.

Archy [21]3 years ago

3 0

0.0166 because it’s bigger than all other numbers

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If the surface area of a cube is 384, what is the length of one of the sides of<br> the cube?

Setler79 [48]

Answer:

S = 8

Each side of a face is 8 units.

Step-by-step explanation:

The surface area of the cube is 384 units.

One face of the cube has an area of s^2

A cube has 6 faces

6s^2 = 384 Divide by 6

s^2 = 384 / 6

s^2 = 64 Take the square root of both sides

sqrt(s^2) = sqrt(64)

s = 8

6 0

3 years ago

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Find the variance of the following data. Round your answer to one decimal place. x 1 2 3 4 5 P(X=x) 0.3 0.2 0.2 0.1 0.2

Reptile [31]

The variance of a distribution is the square of the standard deviation

The variance of the data is 2.2

<h3>How to calculate the variance</h3>

Start by calculating the expected value using:

$E(x) = \sum x* P(x)$

So, we have:

$E(x) = 1 * 0.3 + 2* 0.2 +3 * 0.2 + 4 * 0.1 + 5 * 0.2$

This gives

$E(x) = 2.7$

Next, calculate E(x^2) using:

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

So, we have:

$E(x^2) = 1^2 * 0.3 + 2^2* 0.2 +3^2 * 0.2 + 4^2 * 0.1 + 5^2 * 0.2$

$E(x^2) = 9.5$

The variance is then calculated as:

$Var(x) = E(x^2) - (E(x))^2$

So, we have:

$Var(x) = 9.5 - 2.7^2$

$Var(x) = 2.21$

Approximate

$Var(x) = 2.2$

Hence, the variance of the data is 2.2

Read more about variance at:

brainly.com/question/15858152

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2 years ago

Which of the following is not equivalent to 1/25?

serious [3.7K]

What do the up arrows mean? I may be able to help if you tell me.

5 0

3 years ago

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Jack is buying his neighbor’s plot of land. Jack owns 23 acres. The land he is buying is 15 acres. How many acres will Jack have

Andrews [41]

He will have 38 acres of land.

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3 years ago

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4. Making financial decisions is fairly rare; most people make only a few during their lifetime. True False

yaroslaw [1]

The answer is false.

6 0

3 years ago