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3 years ago

A farmer has 4 horses, 3 pigs and 7 cows.Whatis the probability of randomly selection a pig?

Mathematics

2 answers:

Pie3 years ago

6 0

Answer:

3/14

Step-by-step explanation:

Since we are given specific value for horses,pigs and cows to be 4,3,7 respectively

And we are to find the probability for pigs

So let's add all the given variables together

4+3+7=14

So to find the probability for pigs

3/14

Since the two cannot be divided, therefore the final answer is 3/14

shutvik [7]3 years ago

5 0

Answer:

3/14 or 21.428571428571%

Step-by-step explanation:

First you should add all of the animals together.

3 + 4 + 7 = 14

3 out of 14 animals are pigs.

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It’s not B can someone plz help me with this it will be appreciated I’m really confused

Viktor [21]

Answer:

83.4

Step-by-step explanation:

Area of a Regular Polygon: L (of side) times apothem (height) x 1/2

L : 13.9

Looking at the triangle we can assume the height would be 12 since its logical that 3 of the 4 lines can fit in the middle of the triangle.

H: 12

13.9 x 12 = 166.8

166.8/2 = 83.4

3 0

3 years ago

I'm giving away some points

andreyandreev [35.5K]

Answer:

First off, I would like to thank my mother for birthing me, and giving me the chance to grow and seize this opportunity.

I also want to thank the lady in the hair store who told me I could do anything I set my mind to when I was buying my wig.

And of course, I must thank despicable me 1,2, and 3 for teaching me everything i know.

I really appreciate this. Honestly, this really warmed my heart to be able accept this award from you today.

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3 years ago

One foot is equal to 12 inches. The function I(f) takes a length in feet (as input) and returns a length in inches (as output).

Delicious77 [7]

You need to substitute the number 6 into the function. The output would be 72, because when l(6) = 12(6), you would get l(6) = 72.

8 0

3 years ago

At a specific point on a highway, vehicles arrive according to a Poisson process. Vehicles are counted in 12 second intervals, a

morpeh [17]

Answer: a) 4.6798, and b) 19.8%.

Step-by-step explanation:

Since we have given that

P(n) = $\dfrac{15}{120}=0.125$

As we know the poisson process, we get that

$P(n)=\dfrac{(\lambda t)^n\times e^{-\lambda t}}{n!}\\\\P(n=0)=0.125=\dfrac{(\lambda \times 14)^0\times e^{-14\lambda}}{0!}\\\\0.125=e^{-14\lambda}\\\\\ln 0.125=-14\lambda\\\\-2.079=-14\lambda\\\\\lambda=\dfrac{2.079}{14}\\\\0.1485=\lambda$

So, for exactly one car would be

P(n=1) is given by

$=\dfrac{(0.1485\times 14)^1\times e^{-0.1485\times 14}}{1!}\\\\=0.2599$

Hence, our required probability is 0.2599.

a. Approximate the number of these intervals in which exactly one car arrives

Number of these intervals in which exactly one car arrives is given by

$0.2599\times 18=4.6798$

We will find the traffic flow q such that

$P(0)=e^{\frac{-qt}{3600}}\\\\0.125=e^{\frac{-18q}{3600}}\\\\0.125=e^{-0.005q}\\\\\ln 0.125=-0.005q\\\\-2.079=-0.005q\\\\q=\dfrac{-2.079}{-0.005}=415.88\ veh/hr$

b. Estimate the percentage of time headways that will be 14 seconds or greater.

so, it becomes,

$P(h\geq 14)=e^{\frac{-qt}{3600}}\\\\P(h\geq 14)=e^{\frac{-415.88\times 14}{3600}}\\\\P(h\geq 14)=0.198\\\\P(h\geq 14)=19.8\%$

Hence, a) 4.6798, and b) 19.8%.

7 0

3 years ago

Let f(x) = x2- 3x - 7. Find f(-3)

Alexxx [7]

F(x) = x^2 - 3x - 7
f(-3) = (-3)^ 2 - 3(-3) - 7
f(-3) = 9 + 9 - 7
f(-3) = 18 - 7
f(-3) = 11

6 0

3 years ago