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4 years ago

7

What is the distributive property of 2x(9+2)

1 answer:

lawyer [7]4 years ago

6 0

I think the answer is 22x if it is right can u mark brainiest

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The difference of a number times 2 and 3 equals 8.

laiz [17]

I think the answer is 2 but I'm not sure

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3 years ago

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(4²)³= ?<br><br> A.) 4⁵ <br> B.) 4⁶ <br> C.) 8⁵ <br> D.) 16⁵

STatiana [176]

Answer:

B

Step-by-step explanation:

you will multiply the exponents

8 0

3 years ago

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2071 Old Q.No.5 Person's coefficient of skewness for a distribution is 0.4 and its coefficient of variation is 30%. If mode is 8

AlekseyPX

Answer:

$Mean = 100$

$Median = 96$

Step-by-step explanation:

Given

$C_v = 30\%$ --- coefficient of variation

$mode = 88$

$Skp = 0.4$

Required

The mean and the median

The coefficient of variation is calculated using:

$C_v = \frac{\sigma}{\mu}$

Where:

$\mu \to$ mean

So:

$30\% = \frac{\sigma}{\mu}$

Express percentage as decimal

$0.30 = \frac{\sigma}{\mu}$

Make $\sigma$ the subject

$\sigma = 0.30\mu$

The coefficient of skewness is calculated using:

$Skp = \frac{\mu - Mode}{\sigma}$

This gives:

$0.4 = \frac{\mu - 88}{\sigma}$

Make $\sigma$ the subject

$\sigma = \frac{\mu - 88}{0.4 }$

Equate both expressions for $\sigma$

$0.30\mu = \frac{\mu - 88}{0.4 }$

Cross multiply

$0.4*0.30\mu = \mu - 88$

$0.12\mu = \mu - 88$

Collect like terms

$0.12\mu - \mu = - 88$

$-0.88\mu = - 88$

Divide both sides by -0.88

$\mu = 100$

Hence:

$Mean = 100$

Calculate $\sigma$

$\sigma = 0.30\mu$

$\sigma = 0.30 * 100$

$\sigma = 30$

So:

Also, the coefficient of skewness is calculated using:

$Skp = \frac{3 * (Mean - Median)}{\sigma}$

$0.4= \frac{3 * (100 - Median)}{30}$

Multiply both sides by 30

$0.4*30= 3 * (100 - Median)$

Divide both sides by 3

$0.4*10= 100 - Median$

$4= 100 - Median$

Collect like terms

$Median = 100 - 4$

$Median = 96$

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3 years ago

Find the values of x and y in the diagram. to A X = and y

choli [55]

Answer:

Where is the diagram?

Step-by-step explanation:

Where is the diagram?

8 0

3 years ago

Which ordered pair is a solution of the equation? -4x+7=2y-3

Anika [276]

Answer:

(2,1) and (5,-5)

Step-by-step explanation:

I just truned it in and it was right.

4 0

3 years ago