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3 years ago

11

If the variance of a data set if 6.25 what is the standard deviation

1 answer:

levacccp [35]3 years ago

8 0

Answer:

Variance= (Standard deviation)^2=

✓6.25=Standard deviation

✓(625/100)= Standard deviation

25/10= Standard deviation

2.5= Standard deviation

Step-by-step explanation:

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Do the law of order and the law of grouping apply to subtraction?

emmasim [6.3K]

Since we know that law of order states that sum or product of any two specific numbers will be same irrespective to their order. $a+b=b+a$ and $a*b=b*a$ .

Law of order is only applicable for addition and multiplication. It is not applicable to subtraction and division. Let us see it by an example.

$50-25\neq25-50$

$25\neq-25$

Law of grouping states that it does not matter how to order a group of numbers while adding or multiplying. $a+(b+c)=(a+b)+c$ and $a*(b*c)=(a*b)*c$ .

Law of grouping is not applicable to subtraction and division. Let us see it by an example.

$15-(5-3)\neq(15-5)-3$

$15-(2)\neq(10)-3$

$13\neq7$

Therefore, we can see that law of order and law of grouping is not applicable to subtraction.

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3 years ago

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What is the value of the expression 8 − (7 − 4) + 12 x 2? 29 11 14 19

Naddik [55]

Answer:

29

8-(7-4)+12x2

8-3+12x2

5+12x2

5+24

29

4 0

3 years ago

Arange the number line in the following spending order 20,-40,5-1,10

marishachu [46]

-40 4 10 20 I think this is the answer I’m not sure

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3 years ago

HELPPP PLSSS!!!!!!!!!!! Find the volume of the cone.

Katen [24]

Answer:

The volume of cone is $\boxed{\tt{167.47}}$ unit³.

Step-by-step explanation:

<u>Solution</u> :

As per given question we have provided :

➝ Radius of cone = 4 units
➝ Height of cone = 10 units

Here's the required formula to find the volume of cone :

${\longrightarrow{\pmb{\sf{V_{(Cone)} = \dfrac{1}{3}\pi{r}^{2}h}}}}$

V = Volume
π = 3.14
r = radius
h = height

Substituting all the given values in the formula to find the volume of cone :

${\longrightarrow{\sf{Volume_{(Cone)} = \dfrac{1}{3}\pi{r}^{2}h}}}$

${\longrightarrow{\sf{Volume_{(Cone)} = \dfrac{1}{3} \times 3.14{(4)}^{2}10}}}$

${\longrightarrow{\sf{Volume_{(Cone)} = \dfrac{1}{3} \times 3.14{(4 \times 4)}10}}}$

${\longrightarrow{\sf{Volume_{(Cone)} = \dfrac{1}{3} \times 3.14{(16)}10}}}$

${\longrightarrow{\sf{Volume_{(Cone)} = \dfrac{1}{3} \times 3.14 \times 16 \times 10}}}$

${\longrightarrow{\sf{Volume_{(Cone)} = \dfrac{1}{3} \times 3.14 \times 160}}}$

${\longrightarrow{\sf{Volume_{(Cone)} = \dfrac{1\times 3.14 \times 160}{3}}}}$

${\longrightarrow{\sf{Volume_{(Cone)} = \dfrac{3.14 \times 160}{3}}}}$

${\longrightarrow{\sf{Volume_{(Cone)} = \dfrac{502.4}{3}}}}$

${\longrightarrow{\sf{Volume_{(Cone)} \approx 167.47}}}$

$\star{\underline{\boxed{\sf{\purple{Volume_{(Cone)} \approx 167.47\: {unit}^{3}}}}}}$

Hence, the volume of cone is 167.47 unit³.

$\rule{300}{2.5}$

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2 years ago

Trevor was paid $960 last week for working 40hours. What is Trevor's hourly pay rate before taxes?

Mekhanik [1.2K]

He gets paid 24 dollars an hour 960/40=24

4 0

3 years ago

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