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3 years ago

PLEASE HELP ITS PROBABILITY PICTURE ABOVE

Mathematics

1 answer:

svetoff [14.1K]3 years ago

3 0

Answer: 2/5 = 0.4 = 40%

Step-by-step explanation:

Each sector has an equal area, so each sector has an equal chance of being landed on. There are two shaded sectors and 5 total, so there is a 2 out of 5 chance that the spinner will land on a shaded one.

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Which numbers below represents a repeating decimals? -2/5,-7,3/9,11/12

inessss [21]

3/9 because it simplifies to 1/3 which is 0.33333333333333...

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3 years ago

during a particular period a university's information technology office received 20 service orders for problems with printers, o

stira [4]

Answer:

0.2384 = 23.84% probability that 3 were laser printers.

Step-by-step explanation:

The printers will be chosen without replacement, which means that the hypergeometric distribution is used to solve this question.

Hypergeometric distribution:

The probability of x sucesses is given by the following formula:

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}$

In which:

x is the number of sucesses.

N is the size of the population.

n is the size of the sample.

k is the total number of desired outcomes.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

In this question:

20 orders means that $N = 8$

8 were laser printers, which means that $k = 8$

Sample of 5 means that $n = 5$

What is the probability that 3 were laser printers?

This is P(X = 3).

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}$

$P(X = 3) = h(3,20,5,8) = \frac{C_{8,3}*C_{12,2}}{C_{20,5}} = 0.2384$

0.2384 = 23.84% probability that 3 were laser printers.

4 0

3 years ago

When Helen jogs, every $20$ minutes she checks the total distance she traversed. One day, the first time she checked, Helen had

german

The difference between speeds, during the first 20 minutes and last 20 minutes, would be 4.3 miles. The key word here is difference which automatically tells us to subtract. In this case you would subtract 6.8 miles, the last 20 minutes, by 2.5 miles, the first 20 minutes. In the end, getting 4.3 miles. Hope this helps! :)

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4 years ago

1. A roll of wire holds 3 meters of wire.<br> About how many inches of wire does<br> the roll hold ?

Natasha_Volkova [10]

Answer:

Step-by-step explanation:

1 meter = 39.3701, by definition.

3 meters = 3*(39.3701)

3 meters of wire = 118 inches

8 0

3 years ago

Read 2 more answers

What’s the inverse function of f(x)=4x^2-13

Cerrena [4.2K]

Answer:

. The inverse function is y=x−24 .

Step-by-step explanation:

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3 years ago