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
saveliy_v [14]
3 years ago
10

The law f(t) = -t2 + 6t + 15 represents the number of kilometers of congestion, as a function of time, registered in a city. Wit

h that, determine the maximum number of congestion in that city and the maximum time to reach this value.
Mathematics
1 answer:
andrey2020 [161]3 years ago
3 0
Time is -b/2a, which is 3.
f(3) = 24 = maximum congestion
You might be interested in
Plssssssssssssssssssssssssssss
yawa3891 [41]

Answer:

D) 2275

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Your statement balance is 600.00 You have an outstanding checks for
pochemuha

Answer:

B

Step-by-step explanation:

600+125+175=900-400(deposit)=500

or

600-125-175-300-200=100+400=500

Brainliest Please :)

8 0
3 years ago
Negation "If it rains then I take an umbrella."
Ber [7]
This means that if it’s raining take an umbrella and go thru it regardless in life
8 0
3 years ago
A student takes an exam containing 1414 multiple choice questions. The probability of choosing a correct answer by knowledgeable
Readme [11.4K]

Answer:

0.0082 = 0.82% probability that he will pass

Step-by-step explanation:

For each question, there are only two possible outcomes. Either the students guesses the correct answer, or he guesses the wrong answer. The probability of guessing the correct answer for a question is independent of other questions. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

In this problem we have that:

n = 14, p = 0.3.

If the student makes knowledgeable guesses, what is the probability that he will pass?

He needs to guess at least 9 answers correctly. So

P(X \geq 9) = P(X = 9) + P(X = 10) + P(X = 11) + P(X = 12) + P(X = 13) + P(X = 14)

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 9) = C_{14,9}.(0.3)^{9}.(0.7)^{5} = 0.0066

P(X = 10) = C_{14,10}.(0.3)^{10}.(0.7)^{4} = 0.0014

P(X = 11) = C_{14,11}.(0.3)^{11}.(0.7)^{3} = 0.0002

P(X = 12) = C_{14,12}.(0.3)^{12}.(0.7)^{2} = 0.000024

P(X = 13) = C_{14,13}.(0.3)^{13}.(0.7)^{1} = 0.000002

P(X = 14) = C_{14,14}.(0.3)^{14}.(0.7)^{0} \cong 0

P(X \geq 9) = P(X = 9) + P(X = 10) + P(X = 11) + P(X = 12) + P(X = 13) + P(X = 14) = 0.0066 + 0.0014 + 0.0002 + 0.000024 + 0.000002 = 0.0082

0.0082 = 0.82% probability that he will pass

6 0
3 years ago
The following set of ordered pairs represent a function:
MAXImum [283]
Eeeeeeeeeeeeeeeeeeeeeeeee
4 0
3 years ago
Other questions:
  • Rachel deposits $100 in a bank account and she gets 8% simple interest on it. Which linear model gives the return on her investm
    10·1 answer
  • At 4 seconds an object’s velocity is 22 meters per second at 8 seconds the object’s velocity is 39 meters per second assuming a
    7·1 answer
  • How would a scale factor of 0.25 be used to determine the lengths of the original figure?
    14·1 answer
  • Which of the following is a solution of the equation -5x + 2 = -13?
    10·1 answer
  • PLEASE HELP THIS IS DUE ASAP!!!!!!!!!!
    15·1 answer
  • What are the answers? I’m very confused! Emergency!!
    5·1 answer
  • Nobody wants to answer my questions for brainliest <br> Do the boyz got me do?
    15·1 answer
  • . A soccer ball manufacturer claims the diameters of their ball have a standard deviation of 2 mm when properly inflated. Based
    5·1 answer
  • Write an equation of the line that passes through 9,2 and is parallel to the line y=5/3x+9
    5·1 answer
  • Question 1 GIVING BRAINLIESTT!!!!!!!!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!