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3 years ago

If a fair die is rolled 4 times what is the probability only one roll results in a 6

Mathematics

1 answer:

olganol [36]3 years ago

7 0

Do we have to give it in a percentage? Or....

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Kites are never rhombuses (True or false). All squares are kites (True or false). All kites are squares (True or false). All rho

Aloiza [94]

False , False and false

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4 years ago

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When you roll two number cubes, what are the odds, in simplest form, in favor of getting two numbers less than 3?

IgorLugansk [536]

Answer:

I think the answer would be 4

Step-by-step explanation:

This is because if u have 2 cubes and the only numbers below a 3 are 2 and 1 on each cube it would be 2 chances .

7 0

3 years ago

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Suppose that the times required for a cable company to fix cable problems in the homes of its customers are uniformly distribute

mafiozo [28]

Answer: 1

Step-by-step explanation:

If a random variable x is uniformly distributed in [a,b] the

Mean = $\dfrac{a+b}{2}$

Standard deviation : $\sqrt{\dfrac{(b-a)^2}{12}}$

Let x = Times required for a cable company to fix cable problems

As per given.

x is uniformly distributed between 40 minutes and 65 minutes.

Then , mean = $\dfrac{65+40}{2}=52.5$ minutes

Standard deviation : $\sqrt{\dfrac{(65-40)^2}{12}}\approx7.22$ minutes

Consider , P (mean- 2(Standard deviation) < X < mean+2(Standard deviation) )

= P(52.5-2(7.22)< X < 52.5+2(7.22))

=P(38.06 <X < 66.94 ).

But x lies between 40 minutes and 65 minutes.

Also, [40 minutes, 65 minutes]⊂ [38.06 minutes , 66.94 minutes]

Therefore ,P(38.06 <X < 66.94 ) =1

∴ The probability that a randomly selected cable repair visit falls within 2 standard deviations of the mean is 1.

8 0

3 years ago

There are 147 peaple attending a diner party if each table can seat 7 peaple how many tables are needed for the dinner party?

lys-0071 [83]

21 Tables. If you divide 7 into 147 you get 21 tables needed

7 0

3 years ago

Find an equation of the line passing through the pair of points (4 comma 5 )and (7 comma 11 ). Write the equation in the form Ax

Natalija [7]

Answer:

the line equation is 2*x - y = 3

Step-by-step explanation:

for the line equation in implicit form

A*x + B*y = C

then if the point (x=4,y=5) belong to the line

4*A + 5*B = C

and if the point (x=7,y=11) belong to the line

7*A + 11*B = C

then since we can choose C freely , we set C=1 for simplicity , then

4*A + 5*B = 1 → B= (1-4*A)/5

7*A + 11*B = 1

7*A + 11*(1-4*A)/5 = 1

7*A - 44/5*A + 11/5 = 1

-9/5*A = -6/5

A= 2/3

B= (1-4*A)/5 = (1-4*2/3)/5 = -1/3

therefore

2/3*x - 1/3*y = 1

2*x - y = 3

6 0

3 years ago