A spinner is divided into many sections of equal size. Some sections are red, some are blue, and the remaining are green. The probability of the arrow landing on a section colored red is 11 over 20. The probability of the arrow landing on a section colored blue is 6 over 20. What is the probability of the arrow landing on a green-colored section? 6 over 20 3 over 20 9 over 20 17 over 20

Answers

Answer 1

Answer: We have 3 sections.

$\sf~Red=(11)/(20)$

$\sf~Blue=(6)/(20)$

So the entire spinner is divided into $\sf20$ sections.

Since we only have 3 sections(red, blue, green) we can add red and blue, and subtract 1 or 20/20.

$\sf(11)/(20)+(6)/(20)\rightarrow(11+6)/(20)\rightarrow(17)/(20)$

Subtract:

$\sf(20)/(20)-(17)/(20)=\boxed{\sf(3)/(20)}$

So the probability that the arrow landing on a green-colored section is $\sf(3)/(20)$ .

Answer 2

Answer:

Answer:

3 over 20

Step-by-step explanation:

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70,000+4,000+800+90 number

Answers

70,000+4,000+800+90= 74,890

Melissa wants to know if the number of words on a page in her geography book is generally more than the number of words on a page in her math book. She takes a random sample of 25 pages in each book, then calculates the mean, median, and mean absolute deviation for the 25 samples of each book.Mean Median Mean Absolute Deviation
Geography 48.9 41 9.2
Math 34.5 44 1.9

She claims that because the mean number of words on each page in the geography book is greater than the mean number of words on each page in the math book, the geography book has more words per page. Based on the data, is this a valid inference?
Yes, because the mean is larger in the geography book
No, because the mean is larger in the geography book
No, because there is a lot of variability in the geography book data
Yes, because there is a lot of variability in the geography book data

Answers

Yes, Melissa is correct, because the difference between the means is larger than the sum of the variabilities.

Is this a valid inference?

We know that, for 25 samples of each book, we have:

Book mean median MAD

Geography 48.9 41 9.2

Math 34.5 44 1.9

The claim, is that "the geography book as more words per page"

Notice that even if we subtract the mean standard deviation from the mean in the geography case:

48.9 - 9.2 = 39.7

And we add these in the math case:

34.5 + 1.9 = 36.4

So, even considering the variability, the geography book has more words per page. The value in the geography case is still larger, so, only with this, we conclude that her claim is valid.

If you want to learn more about means, you can read:

brainly.com/question/14532771

I think it would be c. I would have to have all of this information written out for me but i think it is C. Good Luck!

It takes 6 and 1/2 cups of chocolate syrup to make 4 and 1/2 gallons of milk. How many cups of syrup would it take to make 9 gallons of milk?

Answers

Answer:

6.5 /4.5

x/9

x=13 cups

hope this helps you

Estimate. Then find the difference.

324-285=

Answers

Answer:

Step-by-step explanation:

324-285

WE can estimate the numbers to nearest tens or nearest hundreds

LEts estimate the numbers to nearest tens and find the difference

324 round to nearest tens is 320

285 have 5 in once place that is equal to 5 so we add 1 with 8

285 round to nearest tens is 290

Now we find the difference

$320- 290= 30$

The difference is 30

If we estimate to nearest hundred then 300 -300 becomes 0

If rounding to the hundreds
To estimate round 324 and 285 to the closest hundred.
300 - 300
Then subtract 300 - 300 =
0
If rounding to the tens
To estimate round 324 and 285 to the nearest ten.
320 - 290
Then subtract 320 - 290 =
30

What is 15/21 simplified?

Answers

you divide the numerator and the denominator by 3 as both numbers are in the 3 times table so the answer is 5/7

It is simplified to 5/7 because 21/3=7 which is your denominator and 15/3=5 which is your numerator

at wassamatta university, 55.7% of the student body are males. choose one student at random. what is the probability that the student is a female?

Answers

100% - 55.7%

= 100% - 55% - 0.70%

= 45% - 0.70%

= 44.30%

-----------

This means that the probability of selecting a female student at random is 44.3% as a percentage.

Since 55.70% is male, out of the 100% student populace, the probability that the student is a female is 44.30%.

100% - 55.70% = 44.30%

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Dmitri wants to cover the top and sides of the box shown with glass tiles that are 5mm square. How many tiles does he need? ( The length is 15cm, the width is 20cm and the height is 9cm).