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3 years ago

Fiad the sample variance and standard deviation. 21, 10, 3, 7, 11

Mathematics

1 answer:

Serggg [28]3 years ago

7 0

Answer:

SD = 5.987, Var(X) = 35.85

Step-by-step explanation:

Apply the standard deviation formula, remembering that n represents the sample size. Then, just take the square of the standard deviation to obtain the variance.

Hope this helps!

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The cost of fan is 2 times more than the cost of a radio and the cost of a radio is 2 times more than the cost of a watch If the

o-na [289]

Answer:

watch cost is 250

radio cost is 500

and fan cost is 1000

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3 years ago

Solve this problem using the Distributive Property.<br><br> 2 ( 7 + 8 ) =

maria [59]

Answer:

Step-by-step explanation:

Original Equation: 2(7 + 8)

So you have to multiply 2 by 7 which equals 14

Then you multiply 2 by 8 which equals 16

Your equation should now look like this: 14 + 16

Add 14 and 16 together.

Your answer is 30

Hope I helped :)

Please condsider brainliest

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4 years ago

Hip A receives a distress signal from the southwest, and ship B receives a distress signal from the same vessel from the north.

Goshia [24]

Answer:

<h2>The vessel in distress is located in between vessels A and B</h2>

Step-by-step explanation:

To describe how we arrive at the answer, we are going to use the drawing i have attached to this response.

southwest of ship A is just a distance around the third quadrant (using the cardinal point) and it is below A

North of B is few distances ahead of ship B.

<em>Please see the attached sketch </em>

4 0

4 years ago

Dwayne needs 1 2/3cups of shredded cheese to put in

Y_Kistochka [10]

Answer:

7/12 please give brainliest.

Step-by-step explanation:

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3 years ago

Jackie plans to place a rectangular piece of art inside a rectangular frame. She considers a piece of art that is 0.5 meters lon

tamaranim1 [39]

Answer:

The art is rectangular because $(0.5) ^2 + (1.2) ^2 = (1.3) ^2$

(0.5) squared + (1.2) squared = (1.3) squared

Step-by-step explanation:

Given that the piece of art is rectangular in shape.

Length of piece of art = 0.5 meters

Width of piece of art = 1.2 meters

Kindly refer to the attached image in the answer area.

Two adjacent sides of a rectangle are given, the diagonal value can be found by using Pythagorean Theorem.

According to Pythagorean theorem:

$\text{Hypotenuse}^{2} = \text{Base}^{2} + \text{Perpendicular}^{2}$

Here, Hypotenuse will be the diagonal of the rectangle.

Base and Perpendicular will be the two adjacent sides.

Therefore,

$Diagonal^2 = 0.5^2+0.12^2\\\Rightarrow Diagonal^2 = 0.25+1.44\\\Rightarrow Diagonal = \sqrt{1.69}\\\Rightarrow Diagonal = 1.3\ m$

Therefore, the answer is:

The art is rectangular because $(0.5) ^2 + (1.2) ^2 = (1.3) ^2$

(0.5) squared + (1.2) squared = (1.3) squared

3 0

3 years ago

Read 2 more answers