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
Triss [41]
3 years ago
15

8. A sequence can be generated by using 2n - 11. What are the first four terms in the sequence?

Mathematics
1 answer:
Lapatulllka [165]3 years ago
7 0

Answer:

              \bold{a_1=-9\,,\quad a_2=-7\,,\quad a_2=-5\,,\quad a_4=-3}

Step-by-step explanation:

a_n=2n-11\\\\a_1=2(1)-11=2-11=-9\\\\a_2=2(2)-11=4-11=-7\\\\a_3=2(3)-11=6-11=-5\\\\a_4=2(4)-11=8-11=-3

You might be interested in
There is a bag filled with 3 blue and 4 red marbles.
tresset_1 [31]

Using the hypergeometric distribution, it is found that there is a 0.4286 = 42.86% probability of getting 2 of the same colour.

The marbles are chosen without replacement, hence the <em>hypergeometric </em>distribution is used to solve this question.

<h3>What is the hypergeometric distribution formula?</h3>

The formula is:

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}

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

The parameters are:

  • x is the number of successes.
  • N is the size of the population.
  • n is the size of the sample.
  • k is the total number of desired outcomes.

In this problem:

  • There is a total of 3 + 4 = 7 marbles, hence N = 7.
  • Of those, 3 are blue, hence k = 3.
  • 2 marbles will be taken, hence n = 2.

The probability of getting 2 of the same colour is the sum of P(X = 0), which is both red, with P(X = 2), which is both blue, then:

P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}

P(X = 0) = h(0,7,2,3) = \frac{C_{3,0}C_{4,2}}{C_{7,2}} = 0.2857

P(X = 2) = h(2,7,2,3) = \frac{C_{3,2}C_{4,0}}{C_{7,2}} = 0.1429

Hence:

p = P(X = 0) + P(X = 2) = 0.2857 + 0.1429 = 0.4286

0.4286 = 42.86% probability of getting 2 of the same colour.

You can learn more about the hypergeometric distribution at brainly.com/question/4818951

3 0
2 years ago
A farmer has 200m of fencing. What is the area of the largest square paddock that could be fenced
zheka24 [161]
As perimeter of a square is 4*x, it means x=Perimeter/4=200m/4=50m.Now area of the square=x^2=50m^2=2500sq. meter.
6 0
3 years ago
A radio controlled car travels 27 km and 28.5 minutes what is the speed of the car​
olya-2409 [2.1K]

Answer:

56.842 km/hr

0.947 km / min

15.789 m/s

Step-by-step explanation:

speed = distance / time

let's assume your teacher wants it in km/ hr

28.5 minutes = ? hours

60 minutes = 1 hour

we can multiply both sides of 60 minutes = 1 hour by 28.5/60 to get 28.5 minutes = 28.5/60 hours

distance = 27 km

27 km / (28.5/60) hours = 56.842 km/hr

in km / minute

27 km / 28.5 minutes = 0.947 km / min

in meters/second:

1 minute = 60 seconds

28.5 minutes = ? seconds

we can multiply both sides of the first equation by 28.5 to get

28.5 minutes = 1710 seconds

27 km = ? meters

1 km = 1000 meters

we can multiply both sides of the second equation by 27 to get

27km = 27000 meters

27000 meters / 1710 seconds = 15.789 m/s

3 0
2 years ago
What were the total earnings of all five of these movies in the given week?
babunello [35]

*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆

Answer: 500$

Explanation:

I hope this helped!

<!> Brainliest is appreciated! <!>

- Zack Slocum

*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆

5 0
3 years ago
Read 2 more answers
Write the expression as a power and evaluate 2^6 *4 <br> WILL AWARD BRAINLIEST!!!
ipn [44]

Answer:

{2}^{6} \times 4  =  {2}^{6}  \times  {2}^{2}

According to the laws of indices, when multiplying numbers with exponents and the bases are the same add the powers

=  {2}^{6 + 2}

= {2}^{8}

= 256

7 0
3 years ago
Other questions:
  • Hey can you please help me posted picture of question:)
    15·2 answers
  • A soda container holds 5 1/2 gallons of soda.how many ounces of soda does this container holds?
    15·1 answer
  • Based on the table of values below, find the slope between points where x = 2 and where x = 6. x 2,4,6 and Y 12, 10,4
    12·1 answer
  • Which is equivalent to P(z ≥ 1.06)?
    9·2 answers
  • Simplify x 2  − 4x + 4 x 2  − 4
    10·1 answer
  • What is Y if X-2Y = Z?
    11·1 answer
  • A carnival charges $1.50 per ride after an entrance fee. You paid a total of $30
    12·1 answer
  • Rectangle ABCD has width AB=5 and length BC=15. Point E lies on the line through A and B so that △EBC has the same area as recta
    6·1 answer
  • Maria's family has a maple tree and a pine tree in their front yard. The maple tree is 6
    15·1 answer
  • 13 = r/12 solve for r
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!