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3 years ago

A farmer is digging a ditch across his field.

Mathematics

1 answer:

Nitella [24]3 years ago

5 0

Answer:

Let us consider that ,

The worker can complete the work in x hours .

So, he can complete 1/x part of work in 1 hour.

Now, The workers does 2/3 of what he does. So they do 2/3(1/x) part of work in 1 hour . 2/3x work in 1 hour .

Consider them all working together,

So work done in one hour, = 1/x + 2/3x + 2/3x = 3 + 4 / 3x = 7/3x .

So, They taken 1 hour to complete 7/3th part of work. So, In 3x/7 hours , They all can complete the work.

Ratio of the time taken by all instead of only one = 3x/7 : x = 3/7 .

So ,The required option is 3/7

Hope my answer helped you!

Step-by-step explanation:

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Describe at least two advantages and two disadvantages of free-response questionnaires.

Ksivusya [100]

Answer:

Advantages:

- It is easier for people to choose an option rather than to write an essay. The questionnaire reflects what the person is thinking and what the person's point of view is, which as a result makes it easier to analyze and conclude results

- A wide range of questions can be asked within one questionnaire, which makes it an effective way to conduct a survey/test

Disadvantages:

- A person has to read carefully in order to answer each question and sometimes there is lack of concentration by the person filling in the questionnaire

- It is slightly difficult to write an effective questionnaire, that would able to test a vast knowledge/ conduct a survey so that an effective analysis can be done

Step-by-step explanation:

4 0

2 years ago

You randomly draw A marble from a bag, record it’s color, and then replace it. You draw a blue marble 11 out of 50 times. What i

aliina [53]

Answer:

i think it will be a 11/50 chance or 22/100 hope this helps

Step-by-step explanation:

5 0

3 years ago

_+_+_= 30<br><br> You can only use 1,3,5,7,9,11,13,15 <br> No zeros, no decimals, no tricks.

4vir4ik [10]

I am not sure that you can. You can not add 3 odd numbers and get an even number.

5 0

4 years ago

Read 2 more answers

Can someone help with this question

Katena32 [7]

Answer:

It is the 3/11.

Step-by-step explanation:

When changed to decimal form, the answer is

.2727272727272727272727272............

Hope this helps!

3 0

4 years ago

Pleasee help!!

kiruha [24]

Answer:

Yes the stand would make a profit, a $25 profit to be exact.

Step-by-step explanation:

the equation is 3n>100+0.50n

if the stand sells 50 then n=50 making it 3(50)>100+0.50(50).

by doing the multiplication then adding you'll get 150>125 since 3×50 is 150 ans 0.50×50 is 25 and you add the 25 to 100.

which means it'll gain $150 and spend $125 on maintaining the stand and for supplies with a $25 left over. It would make a profit

7 0

3 years ago