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3 years ago

SOMEONE HELP ME PLEASE

Mathematics

1 answer:

WINSTONCH [101]3 years ago

7 0

Answer:

Fraction: 50/100

Percentage: 50%

Step-by-step explanation:

Find the total amount of marbles:

30+50+20=100

Number of blue marbles: 50

Fraction: 50/100

Percentage: 50%

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Write the number as a question of integers to show that it is rational.<br> Please reply quickly!

snow_lady [41]

Answer:

$\frac{-37}{99}$

Step-by-step explanation:

0.555555... becomes $\frac{5}{9}$

Using this logic, we can do the following:

$-0.37373737... = \frac{-37}{99}$

Have a nice day!

I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.

- Heather

3 0

3 years ago

The amount of soda a dispensing machine pours into a 12-ounce can of soda follows a normal distribution with a mean of 12.30 oun

Ugo [173]

Answer: A) .1587

Step-by-step explanation:

Given : The amount of soda a dispensing machine pours into a 12-ounce can of soda follows a normal distribution with a mean of 12.30 ounces and a standard deviation of 0.20 ounce.

i.e. $\mu=12.30$ and $\sigma=0.20$

Let x denotes the amount of soda in any can.

Every can that has more than 12.50 ounces of soda poured into it must go through a special cleaning process before it can be sold.

Then, the probability that a randomly selected can will need to go through the mentioned process = probability that a randomly selected can has more than 12.50 ounces of soda poured into it =

$P(x>12.50)=1-P(x\leq12.50)\\\\=1-P(\dfrac{x-\mu}{\sigma}\leq\dfrac{12.50-12.30}{0.20})\\\\=1-P(z\leq1)\ \ [\because z=\dfrac{x-\mu}{\sigma}]\\\\=1-0.8413\ \ \ [\text{By z-table}]\\\\=0.1587$

Hence, the required probability= A) 0.1587

6 0

3 years ago

What is the mean of Variable B?

kherson [118]

Okay, for variable B you have the data points:
1, 2, 3, 5, 6, 6, 7, 7, 10, and 10.
What you need to do to find the mean (or average) is add all the data up and divide by how many pieces of data you had. So, the sum of all the points is 57. There are 10 points overall.
57/10 is 5.7
Your average for variable B is 5.7

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3 years ago

List all the prime numbers between 50 and 60

leva [86]

Answer:

53, 57, 59

Step-by-step explanation:

i searched it up

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3 years ago

⦁ Suppose that the number of bacteria in a dish increases by 50% every four hours. There are 64 bacteria initially. Write a func

Sav [38]

Number of bacteria = 64•(1.5^(t/4))
So after t=100 hours,
64•(1.5^25) = 1,616,075 or 1.616x10^6

4 0

4 years ago