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3 years ago

What is the standard deviation from the mean roundest to the nearest tenth

Mathematics

1 answer:

Sedaia [141]3 years ago

7 0

The standard deviation from the mean of the data with a variance of 36 is: B. 6.

<h3>What is Standard Deviation?</h3>

Standard deviation can be described as the average of the distance each of the value lies from the mean of the data.

The standard deviation is the square root of the variance.

Variance of the data is given already as 36.

Standard deviation = √36 = 6.

The answer is B. 6.

Learn more about the standard deviation on:

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A=1/2(a+b)h work out the value of A when a=7, b=6 and h=10

Scorpion4ik [409]

Answer:

A = 65

Step-by-step explanation:

A = 1/2(7+6)·10

A = 5(7+6)

A = 5(13)

A = 65

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3 years ago

Identify the equations as parallel lines, perpendicular lines, or neither.

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3 years ago

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3 years ago

If alpha beta are the roots of the equation

Vikki [24]

Answer:

Step-by-step explanation:

Hello, I believe that we can consider a different from 0.

By definition of the roots we can write.

$ax^2+bx+c=a(x-\alpha)(x-\beta)=a(x^2-(\alpha + \beta)x+\alpha \cdot \beta)\\\\\text{So we can say that:}\\\\\alpha + \beta = \dfrac{-b}{a}\\\\\alpha \cdot \beta=\dfrac{c}{a}\\\\\text{So the expected quadratic equation is}\\\\(x+\dfrac{b}{a})(x-\dfrac{c}{a})=0\\\\ \Large \boxed{\sf \bf \ (ax+b)(ax-c)=0 \ }$

Thank you

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3 years ago

The length of a rectangular poster is 9 more inches than two times its width. The area of the poster is 161 square inches. Solve

irinina [24]

Answer:

<u>Width = 7 inches</u>

<u>Length = 23 inches</u>

Step-by-step explanation:

Let :

length = 2x + 9
width = x

Equating to area :

(2x + 9)(x) = 161
2x² + 9x = 161
2x² + 9x - 161 = 0
2x² - 14x + 23x - 161 = 0
2x(x - 7) + 23(x - 7) = 0
x - 7 = 0
x = 7

Dimensions are :

<u>Width = 7 inches</u>
Length = 2(7) + 9
<u>Length = 23 inches</u>

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2 years ago

Read 2 more answers