The government owns the radio and television in the country. All the newspapers have to get

There are 6 red marbles 4 blue marbles to yellow marbles. Sabrina picks 2 marbles without putting the first one back what is the

Yanka [14]

Answer:

P = 3/11

Step-by-step explanation:

There are:

6 red marbles

4 blue marbles

2 yellow marbles.

So there are a total of 12 marbles in the bag, such that each one has the same probability of being randomly picked.

We want to find the probability that the first pick is not yellow (so it can be either blue or red), and the second pick is a blue marble.

Now there are two cases.

The first marble is red and the second blue

the first marble is blue and the second blue

We need to find the probability in each case.

The probability that the first marble is red is equal to the quotient between the number of red marbles (6) and the total number of marbles (12)

p = 6/12

Now, for the second draw, we need a blue marble, the probability in this case is the quotient between the number of blue marbles (4) and the total number of marbles in the bag (now there are 11, because one is already taken)

q = 4/11

The joint probability is equal to the product of the individual probabilities, then:

P₁ = p*q = (6/12)*(4/11) = 2/11

And for the other case, we draw two blue marbles:

For the first draw, the probability is:

p = 4/12

And for the second draw, now there are 3 blue marbles and 11 total marbles, then the probability is:

q = 3/11

The joint probability is:

P₂ = (4/12)*(3/11) = 1/11

The total probability is then:

P = P₁ + P₂ = 2/11 + 1/11 = 3/11

4 0

3 years ago

Josh estimates the height of his desk. What is a reasonable estimate?

cestrela7 [59]

1.5 meters tall is a good estimate

5 0

3 years ago

A sand box measures 10 feet long by 8 feet wide by 1 foot deep what area of land must be clearest

Andrei [34K]

Answer: 80 cubic feet

Step-by-step explanation:

Hello! Your question was not very clear, but I'm assuming you need to find the volume of the sandbox.

To find volume, you need to multiply height by width by length, which is h*l*w.

Height: 1 foot

Width: 8 feet

Length: 10 feet

V=8*10*1=80 cubic feet.

6 0

3 years ago

Read 2 more answers

Suppose you deposit $12.50 into your savings account each week for 4 weeks and then withdraw $4.80 each week for the next two we

monitta

Answer:

The total change in the amount of money in my account is $ 9.60

Step-by-step explanation:

Given:

Amount of money deposited each week, $A_{d}=\$12.50$

Amount of money withdrawn each week, $A_{w}=\$4.80$

∴ Amount of money deposited in 4 weeks, $A_{dT}=A_{d}\times 4=12.50\times 4 = \$50$

∴ Amount of money withdrawn in 2 weeks, $A_{wT}=A_{w}\times 4=4.80\times 2 = \$9.6$

Now, amount of money left in the account is the difference of the two amounts.

So, amount left = $A_{dT}-A_{wT}=50-9.6=\$40.4$

Therefore, the total change in the amount of money in my account is given as:

Total change = Initial amount after 4 weeks - Final amount in the account.

Total change = $ 50 - $40.4 = $ 9.6

7 0

3 years ago

Plz HElp, Worth 30 pts, Will give branliest...

Yanka [14]

Answer:

The answer is 15 21/40

Step-by-step explanation:

If you convert 8 1/8 to 8 5/40 then convert

7 2/5 to 7 16/40 then add the wholes 7 + 8 = 15

and then add the actual fractions 5/40 + 16/40 = 21/40

then add the whole and the fraction 15 + 21/40 youll end

up with 15 21/40 so that is the awnser PS I’m in 5th grade age 10

6 0

3 years ago