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777dan777 [17]
3 years ago
5

2 people can plough a field in 6 hours how long would it take 3 poeple to plough the field​

Mathematics
1 answer:
creativ13 [48]3 years ago
3 0

Answer: It would take 9 hours to 3 people to plough the field

Step-by-step explanation:

Hi, first we have to calculate how much time spends 1 person to  plough the field.

We have to divide the number of hours spent by the number of people.

2 /6 = 3 hours per people

So, we have the rate. Now we simply multiply it by 3 to answer the question.

3 x3 = 9 hours

It would take 9 hours to 3 people to plough the field

Feel free to ask for more if needed or if you did not understand something.

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7) If £1 = €1.14.<br> Work out what €144 is in pounds.
jonny [76]

Answer:

126\frac{6}{19} £

Step-by-step explanation:

£1 = €1.14  /*\frac{144}{1.14}

£\frac{144}{1.14}=144€= 126\frac{6}{19} \\£

8 0
3 years ago
.............I need help thnx
kari74 [83]

The answer is A

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Dylan started with 30 baseball cards and gave away x cards. Sebastian started with 40 cards and gave away twice as many cards as
andre [41]

Answer:

he gave away 5 because if sebastian gave twice as many away and ended up with the same as dylan then it must be 5

4 0
2 years ago
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Use the conditional statement to answer the question.
anygoal [31]
The statement is true, but the inverse is false.
4 0
3 years ago
a test consists of 10 true false questions to pass a test a student must answer at least six questions correctly if a student gu
Delicious77 [7]

Answer:

P(X \geq 6) = P(X=6) +P(X=7) +P(X=8) +P(X=9) +P(X=10)

And using the probability mass function we got:

P(X=6)=(10C6)(0.5)^6 (1-0.5)^{10-6}=0.205

P(X=7)=(10C7)(0.5)^7 (1-0.5)^{10-7}=0.117

P(X=8)=(10C8)(0.5)^8 (1-0.5)^{10-8}=0.0439

P(X=9)=(10C9)(0.5)^9 (1-0.5)^{10-9}=0.0098

P(X=10)=(10C10)(0.5)^{10} (1-0.5)^{10-10}=0.000977

And adding the values we got:

P(X\geq 6) = 0.377

The best answer would be:

D. 0.377

Step-by-step explanation:

Let X the random variable of interest, on this case we now that:

X \sim Binom(n=10, p=0.5)

The probability mass function for the Binomial distribution is given as:

P(X)=(nCx)(p)^x (1-p)^{n-x}

Where (nCx) means combinatory and it's given by this formula:

nCx=\frac{n!}{(n-x)! x!}

For this case in order to pass he needs to answer at leat 6 questions and we can rewrite this:

P(X \geq 6) = P(X=6) +P(X=7) +P(X=8) +P(X=9) +P(X=10)

And using the probability mass function we got:

P(X=6)=(10C6)(0.5)^6 (1-0.5)^{10-6}=0.205

P(X=7)=(10C7)(0.5)^7 (1-0.5)^{10-7}=0.117

P(X=8)=(10C8)(0.5)^8 (1-0.5)^{10-8}=0.0439

P(X=9)=(10C9)(0.5)^9 (1-0.5)^{10-9}=0.0098

P(X=10)=(10C10)(0.5)^{10} (1-0.5)^{10-10}=0.000977

And adding the values we got:

P(X\geq 6) = 0.377

The best answer would be:

D. 0.377

8 0
3 years ago
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