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3 years ago

The league championship 800 meter race has 9 runners. In how many different ways they place first, second and third?

Mathematics

1 answer:

uysha [10]3 years ago

3 0

Answer:

504 different ways

Step-by-step explanation:

There are 9 people competing

9 Different people can come in 1st

We have a winner

Now there are only 8 people left to come in second

8 different people can come in 2nd

There is 1 second place winner

Now there are only 7 people left to come in second

7 different people can come in 3rd

9*8*7 =504

There are 504 different ways

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Oblicz granicę ciągu (pierwiastek z (n^2+6)/2n+2).

kap26 [50]

Answer:

umm what

Step-by-step explanation:

6 0

3 years ago

The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 122 and standard deviation of 22

marin [14]

Answer: 4.27% of adults in the USA have stage 2 high blood pressure.

Step-by-step explanation:

Let x be a random variable that denotes a person with high blood pressure .

Given: Average blood pressure: $\mu=122$

Standard deviation: $\sigma=22$

Someone qualifies as having Stage 2 high blood pressure if their systolic blood pressure is 160 or higher.

The probability that an adult in the USA have stage 2 high blood pressure:

$P(x\geq160)=P(\dfrac{x-\mu}{\sigma}}\geq\dfrac{160-122}{22})\\\\=P(z\geq1.72)\ \ \ [z=\dfrac{x-\mu}{\sigma}]\\\\=1-P(z$

Hence, 4.27% of adults in the USA have stage 2 high blood pressure.

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2 years ago

If the probability that event A takes place is 1/5, what is the probability of event A not

steposvetlana [31]

The probability is 4/5

4 0

3 years ago

Given that 6.00 Ghanaceasa dolar

mash [69]

Answer:

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4 0

2 years ago

Explain how you can use a number line to show that 3/6 and 1/2 are equivalent fractions?

muminat

Make a number line.. Then put 1/6, 2/6, 3/6, 4/6, 5/6, and 6/6 =1

<-------0-------1/6-------2/6-------3/6-------4/6-------5/6-------1------->

Then since 1/2 is half a whole thing put 1/2 ontop of the 3/6 like...
1/2
<-------0-------1/6-------2/6-------3/6-------4/6-------5/6-------1------->

Hope this helps you! :D

5 0

2 years ago