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3 years ago

I need help with this problem what fractions are equivalent to 4.05 repeating

Mathematics

1 answer:

kow [346]3 years ago

6 0

Answer:

401/99 and 802/198

Step-by-step explanation:

Unfortunately the other answer to this question is wrong - you are looking for something equivalent to 4.0505050505050505, not just 4.05.

Typing the answer suggestions into a calculator you get:

405/99 = 4.0909090909 which is incorrect

401/99 = 4.0505050505 which is correct

81/33 = 2.45454545455 which is incorrect

802/198 = 4.0505050505 which is correct

405/100 = 4.05 which is incorrect as it doesn't repeat.

Hopefully this helps, let me know if you have any questions :)

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There are 15 red, 14 green, and 9 yellow balls in a dark room. What is the minimum number of balls that Alicia needs to take so

Tems11 [23]

Answer:

Step-by-step explanation:

1. If you take 12 balls, 9 could be yellow and 3 could be red. We want at least 12 of the same color, so 30 balls isn't a good minimum

2. If you take 30 balls, 9 could be yellow, 10 could be red and 11 could be green. We want at least 12 of the same color, so 30 balls isn't a good minimum.

3. If you take 31 balls, 9 could be yellow, 11 could be red and 11 could be green. We want at least 12 of the same color, so 31 balls isn't a good minimum.

4. If you take 32 balls, 9 could be yellow, 11 could be red and 12 could be green or 9 could be yellow, 12 could be red and 11 could be green or 7 could be yellow, 13 could be red and 12 could be green or 9 could be yellow, 11 could be red and 12 could be green.

We want at least 12 of the same color, and we have it from the different samples of the 4th trial.

So, 32 balls is the minimum number of balls

8 0

3 years ago

PLEASE HURRY I NEED IT NOW THANK YOU

faltersainse [42]

<span><span /></span>A. using a calculator help a lot you know

8 0

4 years ago

If she wants to track to have a circumference of 150 feet , what does the radius of the track need to be?

Gemiola [76]

Solution:

we are given that

she wants to track to have a circumference of 150 feet.

we have been asked to find

what does the radius of the track need to be?

As we know that

$Circumference=2\pi r$

Substitute the values we get

$150=2 \pi r\\
\\
r=\frac{75}{\pi} \\
\\
r=\frac{75}{22/7}\\
\\
r=\frac{75*7}{22}= 23.863feet$

Hence radius=23.863 feet.

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3 years ago

Henry is saving money for college. He earns $210 each week working part time after school and the weekends. Henry currently has

pav-90 [236]

Y=2240+100x+70x
y=170x+2240

x represents the number of weeks
Multiply x by 100 to get the amount of money saved from his parents
Multiply x by 70 to represent 1/3 of his paycheck each week (210/3)=70
add 2240 because that is how much money there is to begin with in the account(this would be the y-intercept)

3 0

3 years ago

One day, thirteen babies are born at a hospital. assuming each baby has an equal chance of being a boy or girl, what is the prob

Nadya [2.5K]

Using the binomial distribution, there is a 0.9983 = 99.83% probability that at most eleven of the thirteen babies are girls.

<h3>What is the binomial distribution formula?</h3>

The formula is:

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$