Can u solve i will give Brainiest plz need it urgently

A single die is rolled one time. Find the probability of rolling a number greater than 4 or less than 3.

Vika [28.1K]

Answer:

The probability of rolling a number greater than 4 or less than 3 is $\frac{2}{3}$

Solution:

In the given question there are two events as follows:

(a) Rolling a number greater than 4 i.e. A = {5,6}

(b) Rolling a number less than 3 i.e. B = {1,2}

Since a die has 6 numbers,

P(A) = $\frac{2}{6}$ where P(A) is the probability of occurrence of event A and P(B) = $\frac{2}{6}$

Since, Event A and Event B has nothing in common therefore they are mutually exclusive events.

P(A∪B) = P(A) + P(B)

$=\frac{2}{6}+\frac{2}{6}$

$=\frac{4}{6}$

$=\frac{2}{3}$

Therefore the probability of getting a number greater than 4 or less than 3 is $\frac{2}{3}$

7 0

3 years ago

Burger patties come packed 8 in a package, and burger buns come packed 12 in a package. We want to buy

irakobra [83]

3 zzzzzzzzzzzzzzzzzzzzz

7 0

3 years ago

A baseball is thrown into the air from the top of a 224-foot tall building. The baseball's approximate height over time can be r

antoniya [11.8K]

The function is $h(t) = -16t^2 + 80t + 224$ , and according to the description of the function in the problem statement, we have the following:

at t=0 after being thrown (that is, at initial time), the height of the ball is calculated by h(0) as follows:

$h(0) = -16(0)^2 + 80(0) + 224=0+0+224=224$ (ft), which is the initial height, as expected.

At t=1 (sec), the height would be $h(1) = -16(1)^2 + 80(1) + 224=-16+80+224=288$ .

etc.

The path is parabolic, as we know by seeing that the function is a quadratic polynomial function. This function has been given in factored form as well. From that we can see that the zeros of the function are t=7 and t=-2.

This means that at t=7 sec, the height h is 0, which means that the ball has hit the ground. t=-2 has no significance in the context of our problem so we just neglect it.

Answer: B) 7 sec

6 0

3 years ago

Read 2 more answers

- In billiards, a rack is used to organize billiard balls at the beginning of the game. Jason is making the wood rack and found

storchak [24]

Answer:

60

Step-by-step explanation:

3 angles , so 180/3=60

4 0

3 years ago

On the first day of sales the school sold 3 senior citizen tickets and 9 child tickets for a total of $75. The school took in $6

denis-greek [22]

ANSWER:

The price of senior citizen ticket is $4 and price of child ticket is $7.

SOLUTION:

Given, first day of sales the school sold 3 senior citizen tickets and 9 child tickets for a total of $75.

The school took in $67 on the second day by selling 8 senior citizen tickets and 5 child tickets.

We need to find what is the price each of one senior citizen tickets and one child tickets.

Let, the price of senior citizen ticket be "x" and price of child ticket be "y"

Then according to the given information,

3x + 9y = 75

x + 3y = 25 [by cancelling the common term 3.

x = 25 – 3y ---- (1)

And, 8x + 5y = 67 ---- (2)

Substitute (1) in (2)

8(25 – 3y) + 5y = 67

200 – 24y + 5y = 67

5y – 24y = 67 – 200

-19y = -133

y = $\frac{133}{19}$

y = 7

Now substitute y value in (1)

x = 25 – 3(7)

x = 25 – 21 = 4

Hence, the price of senior citizen ticket is $4 and price of child ticket is $7.

4 0

3 years ago