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Elza [17]
3 years ago
11

Unit rates! PLZ HELP WILL GIVE BRAINIEST!!

Mathematics
1 answer:
Alchen [17]3 years ago
3 0

Answer:

The answer is $10.32aprox

Step-by-step explanation:

I hope it will help u

Please mark me as brainlist

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Answer:

Range:  

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Answer:

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3 years ago
A set of electric toothbrush prices are normally distributed with a mean of 87 dollars and a standard deviation of
Studentka2010 [4]

Answer:

The proportion of electric toothbrush prices are between 104.60 dollars and 108.20 dollars is 0.0099

Step-by-step explanation:

A set of electric toothbrush prices are normally distributed with a mean of 87 dollars and a standard deviation of  8 dollars.

Mean = \mu = 87

Standard deviation = \sigma = 8

We are supposed to find proportion of electric toothbrush prices are between 104.60 dollars and 108.20 dollars i.e.P(104.60<x<108.20)

Z=\frac{x-\mu}{\sigma}

At x = 104.60

Z=\frac{104.60-87}{8}

Z= 2.2

At x=108.20

Z=\frac{108.20-87}{8}

Z= 2.65

Refer the z table for p value :

P(x<108.20)-P(x<104.60)=P(Z<2.65)-P(Z<2.2)=0.9960-0.9861=0.0099

Hence The proportion of electric toothbrush prices are between 104.60 dollars and 108.20 dollars is 0.0099

4 0
3 years ago
Find the rate of change: (18, 4.5) (20, 5) (22, 5.5) (24, 6)
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Answer:

The rate of change for the

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Step-by-step explanation:

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4 0
2 years ago
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Answer:

B. 6.5

Step-by-step explanation:

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3 years ago
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