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
user100 [1]
3 years ago
13

A circle has a circumference whose length is 25 pi find the length of an arc whose central angle is 90 dregree

Mathematics
1 answer:
Dvinal [7]3 years ago
6 0

An answer could be 33333223.237


You might be interested in
Orders arrive at a Web site according to a Poisson process with a mean of 11 per hour. Determine the following: a) Probability o
Nataliya [291]

Answer:

a) 0.39984 = 39.984% probability of no orders in five minutes.

b) 0.06563 = 6.563% probability of 3 or more orders in five minutes.

c) The length of time is 0.63 hours

Step-by-step explanation:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

In which

x is the number of sucesses

e = 2.71828 is the Euler number

\mu is the mean in the given interval.

Orders arrive at a Web site according to a Poisson process with a mean of 11 per hour.

This means that \mu = 11h, in which h is the number of hours.

a) Probability of no orders in five minutes.

Five minutes means that h = \frac{5}{60} = \frac{1}{12}, so \mu = \frac{11}{12} = 0.9167

This probability is P(X = 0). So

P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

P(X = 0) = \frac{e^{-0.9167}*(0.9167)^{0}}{(0)!} = 0.39984

0.39984 = 39.984% probability of no orders in five minutes.

b) Probability of 3 or more orders in five minutes.

This is:

P(X \geq 3) = 1 - P(X < 3)

In which

P(X < 3) = P(X = 0) + P(X = 1) + P(X = 2)

So

P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

P(X = 0) = \frac{e^{-0.9167}*(0.9167)^{0}}{(0)!} = 0.39984

P(X = 1) = \frac{e^{-0.9167}*(0.9167)^{1}}{(1)!} = 0.36653

P(X = 2) = \frac{e^{-0.9167}*(0.9167)^{2}}{(2)!} = 0.168

P(X < 3) = P(X = 0) + P(X = 1) + P(X = 2) = 0.39984 + 0.36653 + 0.168 = 0.93437

P(X \geq 3) = 1 - P(X < 3) = 1 - 0.93437 = 0.06563

0.06563 = 6.563% probability of 3 or more orders in five minutes.

c) Length of a time interval such that the probability of no orders in an interval of this length is 0.001.

This is h for which:

P(X = 0) = 0.001

We have that:

P(X = 0) = e^{-\mu}

And

\mu = 11h

So

P(X = 0) = 0.001

e^{-11h} = 0.001

\ln{e^{-11h}} = \ln{0.001}

-11h = \ln{0.001}

h =-\frac{\ln{0.001}}{11}

h = 0.63

The length of time is 0.63 hours

7 0
3 years ago
5. Michelle and her 2 pets moved into a new apartment. The management charges a non-
zhenek [66]

Answer:4 months

Step-by-step explanation:

4 0
3 years ago
HELP AGAIN TRUST ME ITS A LOT! BRAINLIEST!!
Ksju [112]

Answer:

they lost 6 yards then 3 yards 6+3=9 so they behind the line of scrimmage by 9 yards

5 0
3 years ago
Please help me lol. The figure on the left is reflected using line l to form the image on the right. Use the information in the
stepladder [879]

Answer and Step-by-step explanation:

The sides and angles should be the same as the un-reflected version, except everything is flipped. Please see attached picture for reference.

<em><u>#teamtrees #PAW (Plant And Water)</u></em>

3 0
3 years ago
Write ten hundredths in standard form
tatiyna
The answer would be 0.01 because 1 is one and 0.1 is one tenth.
6 0
3 years ago
Read 2 more answers
Other questions:
  • Solve 3^4x+5=(1/3)^x+10 for x. please show work
    12·1 answer
  • A can do a work in 14 days and working together A and B can do the same work in 10 days. In what time can B alone do the work? (
    7·1 answer
  • Next number <br> 1 2 8 48 384
    8·1 answer
  • 20 POINTS AND I WILL MARK YOU BRAINISET!!!!! PLEASE COMPLETE ASAP!!
    12·2 answers
  • I need 7-10 pictured
    7·1 answer
  • |6w+12|=6<br><br> I need help with this! It's making me soooooo mad.
    10·1 answer
  • What’s the correct answer to this problem ?
    11·1 answer
  • Udy Guide<br> The difference between 3 times a number x and 2 is 19. What is the value of x?
    15·1 answer
  • Mr.Evans filled up his 14 gallon gas tank for $28.00. What was the price per gallon?
    8·1 answer
  • The radius of a circle is 7 cm.the circle is divided into two equal parts.what is the perimeter of each semicircle part
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!