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blondinia [14]
3 years ago
10

Timpony School District surveyed a random sample of 60 middle school students about the amount of time

Mathematics
1 answer:
mestny [16]3 years ago
5 0

Answer:

267 students.

Step-by-step explanation:

Let x be the total number of students who average watching more than 4 hours of TV each day.

We have been given that Timpony School District surveyed a random sample of 60 middle school students about the amount of time they watch TV. Of the students surveyed, 14 average watching more than 4 hours of TV each day.  

So the probability of a student watching more than 4 hours of TV each day will be

To find the estimated number of students, who watch the TV more than 4 hours each day, we will use relative probability as it is the ratio of the occurrence of a singular event and the total number of outcomes.

So we can set a proportion as:

   

Upon dividing both sides of our equation by 1143 we will get,

Therefore, approximately 267 students of Timpony School District middle school average watching more than 4 hours of TV each day.

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Solve the following: 2(5x-3)
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Answer:

The vale of x is 3/5.

Step-by-step explanation:

First you have to expand out :

2(5x - 3)

= 2(5x) - 2(3)

= 10x - 6

Next you have to solve it by adding 6 to both sides :

Let expression = 0,

10x - 6 = 0

10x - 6 + 6 = 0 + 6

10x = 6

x =  \frac{6}{10}

x =  \frac{3}{5}

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3 years ago
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Accumulation of plastics in the environment creates problems for wildlife and their habitats as well as for human. Plastics are
Crazy boy [7]

Using an arithmetic sequence, it is found that:

i) They collected 300 bottles on June 25th.

ii) The day was July 18th.

<h3>What is an arithmetic sequence?</h3>

In an arithmetic sequence, the difference between consecutive terms is always the same, called common difference d.

The nth term of an arithmetic sequence is given by:

a_n = a_1 + (n - 1)d

In which a_1 is the first term.

In this problem, the sequence is: {417 ,404 ,391, .........}, hence the first term is a_1 = 417, the common difference is d = -13, and the equation is:

a_n = 417 - 13(n - 1)

Item i)

They started on June 15th, hence June 25th is the 10th day, thus:

a_{10} = 417 - 13(9) = 300

They collected 300 bottles on June 25th.

Item ii)

This is n days after June 15th, for which a_n = 1, hence:

a_n = 417 - 13(n - 1)

1 = 430 - 13n

13n = 429

n = 33

33 days after June 15th is July 18th.

More can be learned about arithmetic sequences at brainly.com/question/6561461

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2 years ago
A letter is chosen from the word ROCK and a standard die is rolled. What is the probability that you will get a "vowel and then
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a value of 500 increases by 12%. Write and equation that could be used to find the new value. What is the new value?
myrzilka [38]
500×12%
(500×12)÷100
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500+60=560
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Only number 2, quickly please thanks!
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For every $2 donated by an employee, the corporation matches with $3.

The amount donated by the corporation is c, and the amount donated by employees is e.

When the employees donate $2, the corporation donates $3.

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4 years ago
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