1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
frutty [35]
3 years ago
7

A box contains 8 red marbles, nine blue marbles and 11 yellow marbles. what is the probability that a marble chosen randomly fro

m the box is blue? LEAVE ANSWER AS A FRACTION.
Mathematics
2 answers:
NemiM [27]3 years ago
7 0

Answer:

9/28

Step-by-step explanation: you put the amout of blue marbles over the total marbels

olga55 [171]3 years ago
3 0

Answer:

31%

Step-by-step explanation:

the sum total of all marbles at the beginning is 8+(9+9)=26

the probability of picking a red marble at this point is p(1)=(8/26)

now 25 marbles remain, the distribution is now 8+17=25

the probability of picking a red marble at this point is p(2)=(8/25)

now 24 marbles remain, the distribution is now 8+16=24

the probability of picking a red marble at this point is p(3)=(8/24)

it follows that the remaining probabilities are for "not picking a red marble".

these probabilities are 1-p([1;2;3]).

Probabilities are multiplicative.

The probability for 3 consecutive non-red draws is then given by:

(1-8/26)*(1-8/25)*(1-8/24) = 103/325 | that's roughly 31%

not 100% sure!

You might be interested in
Please answer this correctly
Klio2033 [76]

Answer:

x =1

Step-by-step explanation:

Assuming the figures are similar, we can use ratios to solve

x        2

---- = -----

4         8

Using cross products

8x = 2*4

8x = 8

Divide by 8

8x/8 = 8/8

x=1

6 0
2 years ago
If the third term in a geometric sequence is 20, and the fifth term in the
Gwar [14]

Answer: A) 1/2

Step-by-step explanation:

In a geometric sequence, the consecutive terms differ by a common ratio. The formula for determining the nth term of a geometric progression is expressed as

Tn = ar^(n - 1)

Where

a represents the first term of the sequence.

r represents the common ratio.

n represents the number of terms.

If the third term is 20, it means that

T3 = 20 = ar^(3 - 1)

20 = ar²- - - - - - - - - - 1

If the third term is 20, it means that

T5 = 5 = ar^(5 - 1)

5 = ar⁴- - - - - - - - - - 2

Dividing equation 2 by equation 1, it becomes

5/20 = r⁴/r²

1/4 = r^(4 - 2)

(1/2)² = r²

r = 1/2

6 0
3 years ago
Analysis showed that the mean arrival rate for vehicles at a certain Shell station on Friday afternoon last year was 4.5 vehicle
nadezda [96]

Answer:

idk sorry

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
What are the zeros of the quadratic function f(x) = 2x2 – 10x – 3?
Natasha2012 [34]

Answer:

x=\frac{50+\sqrt{31}}{2},\frac{50-\sqrt{31}}{2}  are zeroes of given quadratic equation.

Step-by-step explanation:

We have been a quadratic equation:

2x^2-10x-3

We need to find the zeroes of quadratic equation

We have a formula to find zeroes of a quadratic equation:

x=\frac{b^2\pm\sqrt{D}}{2a}\text{where}D=\sqrt{b^2-4ac}

General form of quadratic equation is ax^2+bx+c

On comparing general equation with b given equation we get

a=2,b=-10,c=-3

On substituting the values in formula we get

D=\sqrt{(-10)^2-4(2)(-3)}

\Rightarrow D=\sqrt{100+24}=\sqrt{124}

Now substituting D in  x=\frac{b^2\pm\sqrt{D}}{2a} we get

x=\frac{(-10)^2\pm\sqrt{124}}{2\cdot 2}

x=\frac{100\pm\sqrt{124}}{4}

x=\frac{100\pm2\sqrt{31}}{4}

x=\frac{50\pm\sqrt{31}}{2}

Therefore, x=\frac{50+\sqrt{31}}{2},\frac{50-\sqrt{31}}{2}



5 0
3 years ago
Read 2 more answers
A cheese pizza from Pizza Pie is cut into eight equal pieces. When slices are sold individually, each slice costs $1.85. Let c r
andrezito [222]

multiply the amount of one piece with the number of pieces

1.85×8=14.8

5 0
2 years ago
Other questions:
  • Which is bigger, -√-0 or -√1 ?​
    13·1 answer
  • Complete the definition of the h(x) so that it is continuous over its domain. Function a = b =
    10·2 answers
  • In the least-squares line y = 5 − 9x, what is the value of the slope?
    14·2 answers
  • How is this solved. Ive tried different ways and cant get it
    8·1 answer
  • 7x = -84<br> Solve the equation
    12·2 answers
  • Find the slope of the line.. pls help me ill give brainliest. Its timed.
    14·1 answer
  • 8. Find the value of<br> 8^x/2^y<br> if 3x - y = 4,
    9·1 answer
  • 0.4(5x-15)=2.5(x+3) what is the value of x?
    7·2 answers
  • How to know when it’s a function
    9·2 answers
  • You are renting an Airbnb beach house. The house has a 300$ cleaning and service fee, along with a 150$ per night charge.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!