Ask question

Ask question

All categories

3 years ago

14

There are 20 students in the classroom. 5 of these students are selected to go to an assembly. how many such selections are poss

ible?

1 answer:

Ksju [112]3 years ago

4 0

Order of the people does not affect the total number of ways. Thus, we use combinations.

Total combinations: 20C5 = 15,504 ways.

You might be interested in

What is the average rate of change of the function f(x)= 2^x - 3 from x= 4 and x= 6?

WITCHER [35]

aaaaaaaaaaaasasaasasasasaasasasasaaaasasasasas

7 0

3 years ago

For males in a certain town, the systolic blood pressure is normally distributed with a

GREYUIT [131]

Answer:

99.7%

Step-by-step explanation:

Note that 92 and 128 are 3 standard deviations from the mean

The emperical rule or the 68–95–99.7 rule states that 68% of outcomes are wihtin 1 standard deviation from the mean

95% of outcomes are within 2 standard deviations from the mean

99.7% of outcomes are within 3 standard devations from the mean

This is 3 standard deviations so the answer is 99.7

7 0

2 years ago

A wheel had a radius of 15cm . Approximately how far does it travel in 4 revolutions

m_a_m_a [10]

Answer:

c

Step-by-step explanation:

sepse nuk me intereson se ca thua ti jevg dreqi i cmen

4 0

2 years ago

Find the percent increase. Round to the nearest percent. From 85 books to 143 books The percent increase is

klasskru [66]

We are given :

Initial = 86
Final = 143

Let's find the percent increase with the help of formula:

$\boxed{ \sf \: formula : 100 \times \frac{(final - initial)}{initial} }$

$\red{ \rule{35pt}{2pt}} \orange{ \rule{35pt}{2pt}} \color{yellow}{ \rule{35pt} {2pt}} \green{ \rule{35pt} {2pt}} \blue{ \rule{35pt} {2pt}} \purple{ \rule{35pt} {2pt}}$

$\tt \% \: increase = 100 \times \frac{(143 - 85)}{85}$

$\tt \% \: increase = 100 \times \frac{58}{85}$

$\tt\% \: increase = 20 \times \frac{58}{17}$

$\tt\% \: increase = \frac{1160}{17}$

$\tt\% \:increase = 6823.53$

3 0

1 year ago

Solve: 3x-5y= -15 using y=mx+b method. Show steps

Sliva [168]

3x-5y=-15 What you do to one side, you must do to the other.
-<u>3x -3x
</u><u />-5y=-3x-15

<u>-5y</u>=<u>-3x</u> <u>- 15</u>
-5 -5 -5

Final Answer: y=3/5x + 3

4 0

3 years ago

Read 2 more answers