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2 years ago

2/3 of all the people who attended a certain party arrived by 8:00 PM. How many people arrived by 8:00 PM?

Mathematics

1 answer:

andreev551 [17]2 years ago

4 0

Answer:

a) How many people who attended a certain party arrived by 8 PM 60 people

Step-by-step explanation:

2/3 of all people who attended a certain party arrived by 8 P.M . That means that 1/3 arrived in other time. But 2/3 + 1/3 is total number of people in the party.

1) 9 people arrived after 9 PM

And in 2

2) .... By 9 .00 PM 90 % of people were already in the party and. That means

that 9 people who arrived after are 10 %

Then if 9 people are 10 %

x people are 100%

x = (100*9)/10 ⇒ x = 900/10

x = 90

Here we got total number of people in the party 90

Then 2/3 of 90 is 180/3 60

1/3 0f 90 is 30

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3 years ago

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solniwko [45]

Answer:

29.27% probability that it takes Ariana between 58 and 70 seconds to do a math problem

Step-by-step explanation:

An uniform probability is a case of probability in which each outcome is equally as likely.

For this situation, we have a lower limit of the distribution that we call a and an upper limit that we call b.

The probability that we find a value X between c and d, d being greater than c, is given by the following formula:

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3 years ago

Customer account numbers for a certain company consists of 3 letters followed by 5 numbers how many different account numbers ar

Arturiano [62]

Answer:

1,757,600,000

Step-by-step explanation:

company consists of 3 letters followed by 5 numbers how many different account numbers are possible if repetitions of letters and digits are allowed.

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3 years ago

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Ilya [14]

answer:

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step-by-step explanation:

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2 years ago