All categories

3 years ago

A pair of dice are rolled. What is the probability of rolling 4 or greater?

1 answer:

6 0

Answer: option D: 11/12

Explanation:

1) The sample space is formed by 36 pairs: 6×6 = 36.

2) Roolling 4 or more is the same that not rolling 3 or less

3) Rolling 3 or less are (1,1), (1,2), and (2,1). Those are 3 outcomes out of 36.

4) Therefore, not rolling 3 or less (the same that rolling 4 or more) has 36 - 3 = 33 outcomes out of 36.

5) The probability of 33 out of 36 is 33/36

6) Simplify the fraction 33/36 = 11/12

And that is the answer.

You might be interested in

So I have the following integral (Please note that the number below is -2 but for some reason LateX did not accept a negative nu

kramer

$f(x)=4x^3-4x+1\\ F(x)=x^4-\frac{x^2}{2}+x\\ \int_{-2}^{2} f(x)=F(2)-F(-2) \implies\\ (2)^4-\frac{2^2}{2}+2)-((-2)^2-\frac{(-2)^2}{2}-2)= \\ 16-2+2-(16-2-2)=16-(16-4)=4$

I've done this a million times and I'm still getting 4 instead of 32. Are you sure you posted the coefficients?

6 0

3 years ago

VHelena has five different flowers. She plans to give one flower to each of her five teachers in any order. She gives the first

vitfil [10]

i'm pretty sure of this, if those are the four possible answers.

4 0

3 years ago

Divide 12.73 by 8 and round off correct to two decimal places

n200080 [17]

Answer:

Well plz dont delete my question I need points to get mine out

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

elaine opened a saving account with a deposit of 1000. The interest on her account is compounded each year at a rate of 2%. Elai

vivado [14]

Answer:

$1,061

Step-by-step explanation:

2% of 1000 is 20.

If 2% is compounded yearly, then

year one- $1,020

year two- $1,040.40

year three- $1,061.21

Rounded to the nearest whole dollar, Elaine would have $1,061 in her savings account after three years.

5 0

3 years ago

Read 2 more answers

George is twice as old as Edward, and Edward's age exceeds Robert's age by 4 years. If the sum of the three ages is at least 56

marshall27 [118]

Answer:Robert's minimum age is 11 years.

Step-by-step explanation:

Let x represent George's age.

Let y represent Edward's age.

Let z represent Robert's age.

George is twice as old as Edward. It means that

x = 2y

Edward's age exceeds Robert's age by 4 years. It means that

z = y - 4

If the sum of the three ages is at least 56 years, it means that

x + y + z ≥ 56 - - - - - - - - - - 1

Substituting x = 2y and z = y - 4 into equation 1, it becomes

2y + y + y - 4 ≥ 56

4y - 4 ≥ 56

4y ≥ 56 + 4

y ≥ 60/4

y ≥ 15

z = y - 4 = 15 - 4

z ≥ 11

8 0

3 years ago