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
ycow [4]
3 years ago
13

A bag contains 7 red marbles, 3 blue marbles and 2 green. If two marbles are drawn out of the bag, what is the probability, to t

he nearest 1000th, that both marbles drawn will be blue?
Mathematics
1 answer:
Setler [38]3 years ago
5 0

Answer:

0.0455

Step-by-step explanation:

<u>The formula for calculator probability is </u>

# of favorable outcomes / # of possible outcomes

<u>The total number of marbles in the bag: </u>

7+3+2=12

<u>Probability of the first marble being blue:</u>

3/12

<u>Probability of the second marble being blue:</u>

2/11 -- 2 because only 2 blue marbles left after drawing the first one out, 11 because after taking the first marble out, we have 11 marbles left in the bag

<u>Formula for both events happening:</u>

p(A and B) = p(A) * p(B)

In this problem,

A = first one blue

B = second one blue

<u>Probability that if two marbles are drawn out of the bag, both are blue:</u>

3/12 x 2/11 = 0.045454

<u>Rounded answer:</u>

0.0455 (or 4.55%)

You might be interested in
What is 2x+3+8x=3x+9x+7
Reika [66]

Answer:

x=-2

Step-by-step explanation:

Hey there!

In order to solve this equation, you need to combine like terms

The equation after combining the x terms and the contants will look like this

10x+3=12x+7

Now you have to take 10x away from both sides

3=2x+7

Now bring all the constants to the left side

3-7=2x

Simplify

-4=2x

divide 2 on both sides to get x by itself

x=-2

So, the answer is x=-2

3 0
2 years ago
A water sprinkler has a range of 5 meters as shown. The jet of water from the sprinkler sweeps out at an angle of 85° as the noz
telo118 [61]
I found the image that accompanied this problem.
We need to solve for the area of the sector.

A = n/360 * π * r²
A = 85/360 * 3.14 * 5²
A = 0.2361 * 3.14 * 25
A = 18.5347 

Answer is C. 18.5 square meters.
6 0
3 years ago
Read 2 more answers
A log is 20 m long, correct to the nearest metre.
Marat540 [252]

Answer:

222 fence posts

Step-by-step explanation:

Since the log is 20 m long, correct to the nearest metre and has to be cut into fence posts which must be 90 cm long, correct  to the nearest 10 centimetres, there can be x fence posts 90 cm long.

So, we have x × 90 cm = 20 m

x × 0.9 m = 20 m

x = 20 m/0.9 m

x = 222.22

x ≅ 222 fence posts

So, the largest number of fence posts that can possibly be cut from the log is 222 fence posts.

4 0
3 years ago
Find the percent of increase:<br> Year 2005 2010<br> Population 3.2<br><br> (millions) 5.6
hjlf

Answer:

the answer is x4sqaured=2

mark me brainliest

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Which segment represents the radius of the circle?
BARSIC [14]

Answer:The answer would be A) blue

Step-by-step explanation: The blue segment represents the measurement of the part of a circle

5 0
3 years ago
Other questions:
  • The mean radius of earth is 6,371.0 kilometers and the mean radius of earths moon is 1,737.5 kilometers. What is the approximate
    15·1 answer
  • What is correct?
    9·1 answer
  • Pamela babysits for a family down the street. She earns $25 each time she visits. Write an expression that could be used to find
    8·1 answer
  • Which transformation causes the described change in the graph of the function y = cos x? The transformation results in a horizon
    8·1 answer
  • Gloria wants to buy donuts for her younger brother. There are three donut bakeries in the mall, and each offers a different deal
    10·1 answer
  • A formal power series over R is a formal infinite sum f = X[infinity] n=0 anxn, where the coefficients an ∈ R. We add power seri
    12·1 answer
  • Required
    6·1 answer
  • Pls send answer ppl​
    7·2 answers
  • What is the solution to the equation?<br> 2<br> a+53 =<br> =9
    7·1 answer
  • Graph y = x^2 - 4x + 1 on your paper and find the vertex.
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!