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11Alexandr11 [23.1K]
3 years ago
14

PLEASE HELP

Mathematics
2 answers:
Nikolay [14]3 years ago
8 0

Answer:

204,160,000

Step-by-step explanation:

Assuming the sample is a good representation of the people from the United States.

Since there were 1,000 surveyed... and 638 of them were wearing glasses,  that makes a proportion of 638 out of  1,000 people, or 63,8 / 100 people... so 63.8%... or 0.638

So, if we assume that the US population is of 320 million, how many people does that make wearing glasses.... we just have to multiply 320M by 0.638

G = 320,000,000 * 0.638 = 204,160,000

mylen [45]3 years ago
4 0

Answer:

<u><em>39.68 million[</em></u>

Step-by-step explanation:

Remember that the sample is 1000 people.

Of those 1000 people we know that 762 wear corrective lenses. 124 of these people wear contact lenses.

The probability that a randomly selected person will wear contact lenses is:

P = \frac{124}{1000}\\\\P = 0.124

Then, the expected number of people who wear contact lenses is:

N = 320 * P

Where N is given in units of millions.

N = 320 * 0.124

N = 39.68\ million

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Um prêmio está avaliado em 75% de R$ 50.000,00. Qual valor será dado ao premiado?
fredd [130]

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36 - 40. In order to save for her high school graduation, Marie decided to save P200 pesos at the end of each month. If the
PtichkaEL [24]

Answer:

200.4 at 0.25%

Step-by-step explanation:

Given data

P= P200

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t= 1 year

n= 12

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substitute

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7 0
3 years ago
17 x - 3 - x -9 = 68 <br>(please show step by step) ​
Marrrta [24]

Answer

The answer is x=5

Step-by-step explanation:

17x-3-x-9=68

Okay so first you need to combine similar terms.

So -3-9=-12

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so then you get

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4 0
2 years ago
Read 2 more answers
-4-(3) = <br>3+(-5) = <br>4+6= <br>-5-9= <br>-4+(-9) =​
Paha777 [63]

Step-by-step explanation:

-4-(3)=-7

step two

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step three

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step four

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step five

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6 0
2 years ago
Read 2 more answers
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