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
Sedaia [141]
2 years ago
5

Please help me I really need this

Mathematics
2 answers:
Alenkasestr [34]2 years ago
8 0

Answer:

56

Step-by-step explanation:

8C5 = 56

Serjik [45]2 years ago
7 0

Answer:

  8C5 = 56

Step-by-step explanation:

The formula for nCk is ...

  nCk = n!/(k!(n-k)!)

Then the value of 8C5 is ...

  8!/(5!(8-5)!) = 8·7·6/(3·2·1) = 8·7

  8C5 = 56

_____

<em>Additional comment</em>

The larger of the denominator factorials will cancel most of the factors of the numerator. The remaining denominator factors can be factored from the remaining numerator values to simplify the problem of doing the math by hand. Most graphing calculators and all spreadsheets can compute this function for you.

  \dfrac{8!}{5!\cdot3!}=\dfrac{8\cdot7\cdot6\cdot5\cdot4\cdot3\cdot2\cdot1}{(5\cdot4\cdot3\cdot2\cdot1)(3\cdot2\cdot1)}=\dfrac{8\cdot7\cdot6}{3\cdot2\cdot1}=\dfrac{8\cdot7\cdot6}{6}=8\cdot7

You might be interested in
Mrs. Royal has 99 Royal Recognition awards to give out. Each class received 9 awards. How many classes received awards
Art [367]

Answer:

11

Step-by-step explanation:

you just divide it

6 0
3 years ago
Read 2 more answers
The equation f = v + at represents the final velocity of an object, f, with an initial velocity, v, and an acceleration rate, a,
omeli [17]
<span>f = v + at

Subtract v from both sides.

f - v = at

Divide both sides by a.

(f - v)/a = t

Switch sides.

t = (f - v)/a

t = \dfrac{f - v}{a}</span>
4 0
3 years ago
Read 2 more answers
Solve the following equation by factoring. 6x 2 - 5x = 50 {-5/3, 5} {-5/2, 10/3} {-10/3, 5/2}
rosijanka [135]
The correct answer is <span>{-5/2, 10/3}.</span>
6 0
2 years ago
Write an equation that is parallel to the line 4x - y = 2 and passes through the point (-2, 3)
sergeinik [125]
We can start from the given line's coefficients and translate the line from the origin to the given point.
  4(x -(-2)) -(y -3) = 0
  4x +8 -y +3 = 0

The equation of the desired line is ...
  4x -y = -11

_____
For standard form line ax+by=c, any parallel line will have only a different value of c. For c=0, the line goes through the origin (0, 0). To make it go through point (h, k) we can write it as
  a(x-h) +b(y-k) = 0
which is completely equivalent to
  ax +by = ah +bk

7 0
3 years ago
Please help me with these two questions. Find the circumference AND area for the circles on the right. (I will mark brainliest)
notsponge [240]

5). Radius = 6 km. Circumference = 12π km. Area = 36π km²

6). Diameter = 8 mm. Circumference = 8π mm. Area = 16π mm²

7 0
2 years ago
Read 2 more answers
Other questions:
  • Suriland cannot both export wheat and keep bread plentiful and affordable in Suriland. Accordingly, Suriland's wheat farmers are
    5·1 answer
  • How do i answer 1-4?
    8·2 answers
  • Write 8 in the form 4n
    15·1 answer
  • a technician charges 25$ per hour plus 50$ for a house call to repair home computers. make a table and a graph to show the cost
    5·1 answer
  • Will give brainliest: Use geometry to evaluate the integral from negative 2 to 2 of the quantity 2 minus the absolute value of x
    12·2 answers
  • Plz help!!!<br> Solve 6 (u - 4) - 8 = -6 (-4u + 6) -2u<br> Combine like-terms before solving
    7·1 answer
  • Describe the rule of this function, and find the missing number
    6·1 answer
  • Hey can some one help with this plz​
    10·1 answer
  • There are 10 red blocks six blue blocks and four green box what is the ratio of blue blocks to the total number of blocks
    9·1 answer
  • Which parallelogram will have the smallest area?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!