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
Anon25 [30]
3 years ago
10

There is a bag filled with 3 blue and 4 red marbles. A marble is taken at random from the bag, the colour is noted and then it i

s replaced. Another marble is taken at random. What is the probability of getting 2 of the same colour? need help with this im stuck pls explain how to do aswell
Mathematics
1 answer:
Morgarella [4.7K]3 years ago
8 0

altogether there are 7 marbles in the bag.

put the marbles in fractions, so blue would be 3/7

and red would be 4/7. but becuase you need 2 of the same, you do

3/7 x 3/7 = 9/49

4/7 x 4/7 = 16/49

then add them togther

25/49

if you need it as a percentage, it is

51.020408163265%

You might be interested in
The purpose of statistical inference is to make estimates or draw conclusions about a.
Free_Kalibri [48]

<u>When we make estimates of or draw conclusions about one or more characteristics of a population based upon the </u><u>sample</u><u>, we are using the process of </u><u>statistical inference</u><u>.</u>

  • To estimate this sample to sample variance or uncertainty is the goal of statistical inference.

What is the purpose of statistical inferences ?

  • To be able to make inferences about a population based on data from a sample is the goal of statistical inference.
  • The process of statistical inference involves selecting a sample, gathering data from that sample, calculating a statistic from the data, and drawing conclusions about the population from that statistic.

How is statistical inference used to draw conclusions?

Estimation and hypothesis testing are components of statistical inference (evaluating a notion about a population using a sample) (estimating the value or potential range of values of some characteristic of the population based on that of a sample).

Learn more about statistical inference

brainly.com/question/3640262

#SPJ4

4 0
2 years ago
A home improvement store advertises 60 square feet of flooring for $287.00 including an $80.00 installation fee. How much does e
grin007 [14]

60 square feet= $287.00 + $80.00

                       = $367

1 square feet= $367 / 60

                     = $6.116666667

                     = $6.12 (to 2dp) ( answer)

4 0
3 years ago
Read 2 more answers
. What is the solution to the equation –3.5(x + 12) = –2x + 18?
kotegsom [21]

Answer:

x=-4.36

     

Step-by-step explanation:

4 0
3 years ago
Find the value of x to the nearest tenth. (The last answer is 13.3)
Julli [10]
Your answer is the first option, 8.0. You can find this by using the sine rules for sides, so:
10/sin(90) = x/sin(53)
× sin(53)
7.98 = x
And 7.98 rounded to the nearest tenth is 8.0.
I hope this helps!
8 0
3 years ago
Read 2 more answers
A hot air balloon can hold u to 300 pounds of weight the balloons pilot weighs 140 pounds how many 20 pound bags of sand b can h
Kazeer [188]
300 - 140 = 160
160/20=

8
3 0
3 years ago
Read 2 more answers
Other questions:
  • Simplify the expression <br><br> 3a(3-a)+3(a^2-3)+3a
    10·2 answers
  • Determine the effect on the balance sheet after the following transaction.
    5·2 answers
  • The temperature on sunday was -15 c.The temperature on monday was 12 degrees less than the temperature on sunday . What was the
    7·2 answers
  • How do u round 6,299,504 to thw nearest thousand
    15·2 answers
  • Can someone explain what to do here I’m very confused?
    11·1 answer
  • If r = 9 units and h = 6 units, what is the volume of the cylinder shown above?
    7·2 answers
  • Please help!!!! I will mark brainlest
    9·1 answer
  • What is the value of t?
    14·1 answer
  • What’s the approximate value of tan 1
    6·1 answer
  • Downtime refers to the time duration that the service is unavailable, how much cumulative downtime per year will an sla percenta
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!