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
Schach [20]
2 years ago
7

Please help me and explain well!

Mathematics
1 answer:
Fynjy0 [20]2 years ago
8 0

Answer:

i can see the image

Step-by-step explanation:

brainliest me

You might be interested in
Whitch expression is equivalent to 7 to the 3rd power? 7*7*7. Or 21. Or. 3 to the power of. Or. 10
laila [671]

Answer:

7x7x7

Step-by-step explanation:

8 0
2 years ago
第 5 个问题 a multiple choice exam has 10 questions. each question has 3 possible answers, of which one is correct. a student knows
tatuchka [14]

The chances that the student was merely guessing is 1/3.

Bayes Theorem determines the conditional probability of an event A given that event B has already occurred.

denoted by

P(A/B)=\frac{P(A)*P(B/A)}{P(B)}

let A be the  event that the student knows the answer .

B be  the  event that the student does not knows the answer .

and

E be the event he gets answer correct .

According to the given question

P(A)=\frac{4}{10} \\\\ P(B)=1-\frac{4}{10} =\frac{6}{10}

Probability that the answer is correct ,given that he knows the answer is

P(E/A)=1

Probability that the answer is correct ,given that he guesses it is

P(E/B)=\frac{1}{3}   [as the MCQ has 3 options and only one is correct]

We need to find the probability that he guesses the answer given that it is correct.

Required probability P(B/E)=\frac{P(B)*P(E/B)}{P(A)*P(E/A)+P(B)*P(E/B)}

Substituting the values we get

P(B/E)=\frac{\frac{6}{10} *\frac{1}{3} }{\frac{4}{10} *1+\frac{6}{10} *\frac{1}{3} }

=\frac{6}{30}*\frac{30}{18}  \\ \\ =\frac{6}{18} \\ \\ =\frac{1}{3}

Therefore ,  the chances that the student was merely guessing is 1/3.

Learn more about Probability here brainly.com/question/13140147

#SPJ4

8 0
11 months ago
Pls help quick………… Math
AVprozaik [17]
C is the answer I got it right
8 0
3 years ago
Read 2 more answers
A fireman's water hose shoots 320 kg of water each second against the door of a building. The velocity of the water is 20 m/s an
NeX [460]

Answer:

6400\ \text{N}

Step-by-step explanation:

\dfrac{m}{t} = Mass flow rate of water = 320 kg/s

m = Mass of water on the door

t = Time

v = Velocity of water on the door = 20 m/s

Force is given by

F=\dfrac{m}{t}v\\\Rightarrow F=320\times 20\\\Rightarrow F=6400\ \text{N}

The average force is exerted by the stream of water is 6400\ \text{N}.

3 0
3 years ago
PLEASE HELP ME OUT WILL MARK BRAINLIEST
crimeas [40]

Answer:

I'm pretty sure the answer is D.

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • Tickets to a school play cost $3 for each student and $8 for each parent. What would be the best choice for variable(s) when wri
    13·1 answer
  • A pole that is 3.2m tall casts a shadow that is 1.74 m long. At the same time, a nearby tower casts a shadow that is 48.25 m lon
    9·1 answer
  • Marco thinks the total number of runs a team scores in a season is a better indicator of how many wins it will have in that seas
    7·2 answers
  • NEED ANSWER NOW PLEASE!
    13·1 answer
  • -85 - 8x =2x + 115 anyone know how to do this??
    7·2 answers
  • Which principle prevents a government from becoming too powerful?
    15·1 answer
  • What part of the circle is shaded?
    14·1 answer
  • Which value is a solution for the equation tan x/2 = -1?
    7·2 answers
  • Question: Solve 28/36 = 14/y.
    9·2 answers
  • Given f (x) = x2 + 4x + 5, what is f of the quantity 2 plus h end quantity minus f of 2 all over h equal to?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!