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3 years ago

How many places do you need to move the decimal to the left to write the number below in the scientific notation?

Mathematics

1 answer:

Zolol [24]3 years ago

4 0

Answer:

Step-by-step explanation:

in scientific notation a number cant be greater than 10. so you have to move the decimal to make it under 10.

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Suppose that the number of asbestos particles in a sample of 1 squared centimeter of dust is a Poisson random variable with a me

Maslowich

Answer:

The approximate probability that 10 squared centimeters of dust contains more than 10110 particles is 0.1357

Step-by-step explanation:

For a sample of 10 sqaured centimeters of dust, the total amount of asbestos particles has a Poisson distribution with a mean of 1000/1 * 10 = 10000.

We will approximate this probability to a normal distribution. The variance is also 10000 (because it is poisson), therefore the standard deviation is √10000 = 100. Lets call X the distribution, and W its standarization, given by

$W = \frac{X-\mu}{\sigma} = \frac{X-10000}{100}$

We have

$P(X>10110) = P(\frac{X-10000}{100} > \frac{10110-10000}{100}) = P(W > 1,1) = 1-\phi(1,1) = 1-0.8643 = 0.1357$

Where $\phi$ is the cummulative distribution function of a standard normal distribution. The values of $\phi$ are well known and they can be found in the attached file.

We conclude that the approximate probability that 10 squared centimeters of dust contains more than 10110 particles is 0.1357.

Download pdf

4 0

3 years ago

I need help with this question

antoniya [11.8K]

A) QPT=34 opposite interior with PRS
b)SPT=146-34=112
c)TSR+SRT+RTS=180
TSR+34+(180-46)=180
TSR+34-46=0, TSR=12
d)QRS=146
e)PQR+QPS=180
PQR+146=180
PQR=180-146=34

6 0

3 years ago

A survey of college students resulted in the following information:

AnnyKZ [126]

Answer:

Shoe survey:

1.) 34 people were surveyed

2.) 8 people own Adidas ONLY

Allergies:

3.) 14 people not allergic

4.) 9 people are allergic to milk

5.) 23 people are allergic to 1 thing or " less than 2 foods"

6.) They said "or" in the question but here's both answers: 14 to milk and 18 to banana

Love the Actors:

7.) 21 people like Will Smith

8.) 2 people who don't like either

Step-by-step explanation:

1.) It said 20 people own BOTH brands so subtract 20 from the Nike shoes & Adidas shoes, giving 4 people who only use Nike and 8 people who use Adidas, don't forget the 2 who have neither. Add 20+4+8+2=34

2.) As we found out (above) there are 8 people who use Adidas

3.) Keep in mind there are 50 people were surveyed, add all the numbers

( =36) then subtract 50 (the total) minus 36 giving you 14

4.) Add 6( only milk) + 3( banana &milk)= 9

The rest is to long and don't want to keep you wanting

I did the math thou... hope this helps :)

8 0

3 years ago

This is the floor plan of jack's toy room. Jack needs to determine the area of the floor so he can order new flooring. Enter the

Mamont248 [21]

Answer:

205.75

Step-by-step explanation:

first, separate the floor into 3 different rectangles to calculate the area and then add them together.

area of rec=L*B

rec 1: 11.5*8=92

rec 2: (12.5-5)*(18.5-8-7)=26.25

rec 3:7*12.5=87.5

Then:

92+26.25+87.5=205.75

5 0

3 years ago

The recipe for beef stew calls for 1/4 teaspoon of pepper for every 3 potatoes. If 9 potatoes are used, how much pepper is neede

ra1l [238]

Answer:

3/4 pepper

Step-by-step explanation:

if you add 1/4 3 time you get the answer

7 0

3 years ago

Read 2 more answers