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Alinara [238K]
3 years ago
6

Need help with a math question

Mathematics
2 answers:
ryzh [129]3 years ago
3 0

Answer:

27%

Step-by-step explanation:

take the number of times it is at 2 cars (16) and divide by the number of surveyed times in total (60). multiply by 100 to show answer as a percent

swat323 years ago
3 0

<u>Answer:</u>

27%

<u>Step-by-step explanation:</u>

We are given the results of survey of one thousand families to determine the distribution of families by their size.

We are to find the probability (to the near percent) that a line has exactly 2 cars in it.

Frequency of 2 cars in a line = 16

Total frequency = 2 + 9 + 16 + 12 + 8 + 6 + 4 + 2 + 1 = 60

P (2 cars in line) = (16 / 60) × 100 = 26.6% ≈ 27%

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The distance from Neptune to Mars is 4.272\times 10^{9}4.272×10 9 kilometers. How long would it take a rocket, traveling at 4.8\
just olya [345]

The time taken is 8.9 * 10^4hrs&#10;&#10;&#10;

<h3>Distances</h3>

Given the following information:

  • Distance from Neptune to Mars = 4.272\times 10^{9}
  • Time is taken = 4.8\times 10^{4}km/hr

Get the time taken:

Time  = Distance/Speed

Time = \frac{4.272\times10^9}{4.8\times 10^4}

Time = 0.89 * 10^5

Time = 8.9 * 10^4hrs

Hence the time taken is 8.9 * 10^4hrs&#10;&#10;&#10;

Learn more on distance here: brainly.com/question/4931057

6 0
3 years ago
Q and r are independent events. if p(q) = 1/4 and p(r)=1/5, find p(q and r)
klasskru [66]

Answer:

(b) \frac{7}{30}

Step-by-step explanation:

When two p and q events are independent then, by definition:

P (p and q) = P (p) * P (q)

Then, if q and r are independent events then:

P(q and r) = P(q)*P(r) = 1/4*1/5

P(q and r) = 1/20

P(q and r) = 0.05


In the question that is shown in the attached image, we have two separate urns. The amount of white balls that we take in the first urn does not affect the amount of white balls we could get in the second urn. This means that both events are independent.


In the first ballot box there are 9 balls, 3 white and 6 yellow.

Then the probability of obtaining a white ball from the first ballot box is:

P (W_{u_1}) = \frac{3}{9} = \frac{1}{3}

In the second ballot box there are 10 balls, 7 white and 3 yellow.

Then the probability of obtaining a white ball from the second ballot box is:

P (W_{u_2}) = \frac{7}{10}

We want to know the probability of obtaining a white ball in both urns. This is: P(W_{u_1} and W_{u_2})  

As the events are independent:

P(W_{u_1} and W_{u_2})  = P (W_{u_1}) * P (W_{u_2})

P(W_{u_1} and W_{u_2})  = \frac{1}{3}* \frac{7}{10}

P(W_{u_1} and W_{u_2})  = \frac{7}{30}

Finally the correct option is (b) \frac{7}{30}

3 0
3 years ago
A community in texas with a population of less than 5,000 residents may become which type of municipality?.
enyata [817]

Answer:

Some cities and towns are called municipali- ties. If a city government incorporates by citizen request, it is considered a municipal govern- ment. Cities in Texas operate under one of two types of law—general law or home rule. Small cities with populations of less than 5,000 may incorporate as a general-law city.

7 0
3 years ago
Help guyssssssssssssss
n200080 [17]

Answer:

1

Step-by-step explanation:

5 0
3 years ago
What is the absolute value of each number 2 1/3
Arlecino [84]
They are already both positive numbers, so the absolute value of 2 is 2, and the absolute value of 1/3 is 1/3.
8 0
3 years ago
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