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
VARVARA [1.3K]
3 years ago
6

Use Pascal's triangle to find 6C3

Mathematics
2 answers:
katrin2010 [14]3 years ago
5 0
Ignore tht pascal triangle its way too inefficient
Formula nCr = n! /r! (n-r)!
So 6C3= 6!/3!(6-3)!=20
Lena [83]3 years ago
4 0

Using Pascal's triangle

Number of terms                                                    Expression

   1  =                                   1----------------------------(x+a)^0

   2 =                                1        1----------------------------(x+a)

  3 =                         1         2          1-----------(x+a)^2

 4=                     1         3            3         1----------(x+a)^3

 5=                 1          4         6         4        1----------(x+a)^4

6=          1           5            10        10         5       1----------(x+a)^5

7=       1             6            15          <u>20 </u>       15         6      1 ----------(x+a)^6

8=     1             7             21          35        35        21      7      1 ----------(x+a)^7

The meaning of _{3}^{6}\textrm{C} , is coefficient of fourth term of an expression having 7 terms.

Using pascal Triangle value  or coefficient of Fourth term of the expression

(x+a)^6=\\\\\text{will be}\\\\_{3}^{6}\textrm{C}=20

You might be interested in
What is the answer to this question
Lesechka [4]

Remark

There's a lot you don't know here. Are DE and GF parallel? Is B a right angle? You can't assume that it is. The safest way to proceed is to give x in terms of 58 and B. You might get an answer that gives you something like 32 but I don't think you can say that unless you are told somewhere that ABC is a right angle triangle with the right angle at B.

So what to do.

<BAC = 58o                               That's because <BAC = <IAK They vertically opposite.

<ABC + <BAC + <ACB = 180o       All triangles have 180o

<ACB = 180 - 58 - <ABC                Solve for an unknown angle of a triangle.

<ACB = 122 - <ABC

x = <ACB                                       Vertically opposite angles.

x = 122 - <ABC                             Answer  It's 32 if ABC is a right angle.  

6 0
3 years ago
1. If quadrilateral ABCD is rotated 270° clockwise about the origin, find the coordinates of B'.
Zielflug [23.3K]

Answer:

The coordinates of B' are (-3, 5).  

Step-by-step explanation:

For every 90 degrees rotated, the coordinate numbers switch and one is multiplied by -1, when clockwise it's the 2nd one, and when counterclockwise, it's the 1st.

4 0
3 years ago
Name two points that determine line AC.
Bogdan [553]

Answer: A & C

Step-by-step explanation:

4 0
3 years ago
On a number line what is the distance between-3/7 and -2/3
Nikitich [7]
Is simply their difference,

\bf -\cfrac{3}{7}-\left( -\cfrac{2}{3} \right)\implies -\cfrac{3}{7}+\cfrac{2}{3}\impliedby \textit{LCD of 21}\implies \cfrac{-3(3)+2(7)}{21}&#10;\\\\\\&#10;\cfrac{-9+14}{21}\implies \cfrac{5}{21}

4 0
3 years ago
How many solutions exist for 2|x − 1| = 8?
lora16 [44]
Two solutions exist,
2(x - 1) = 8
2x - 2 = 8
2x = 10
x = 5
&
2(x + 1) = 8
2x + 2 = 8
2x = 6
x = 3

the two solutions are 5 and 3
4 0
3 years ago
Other questions:
  • Round the number plz
    10·1 answer
  • Please Help
    15·1 answer
  • When it is 4:00 a.m. in London, it is 11:00 a.m. in Hanoi. If you leave Hanoi at 7:45 a.m. on Friday and fly to London over the
    13·2 answers
  • What is the following quotient? 9+√2/4-√7<br><br> Please Help!! thank you.
    5·1 answer
  • Express the inequality using interval notation. 3&lt;×≤5
    15·1 answer
  • Estimate the quotient 6.1 divided by 8
    14·1 answer
  • Find the corresponding point on the unit circle for the radian measure given below. 0=7pi/2
    9·1 answer
  • Solve for x and y:<br>x = <br>y = ​
    11·1 answer
  • Use the order of operations to evaluate 5 + 4 × 2.<br> A. 11<br> B. 13<br> C. 18<br> D. 22
    8·2 answers
  • I am a type a person who likes d cups will do anything to touch a d cup doesn't care what other people say about me and only lik
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!