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
Masteriza [31]
3 years ago
15

Sir? sir? are u there? help me -_-

Mathematics
1 answer:
vfiekz [6]3 years ago
5 0

Answer:

a) The easiest way is to use a calculator such as a Casio brand or Sharp brand and key in 9C7 to get 36.

However, you can also use this formula: nCr=\frac{n!}{r!(n-r)!} where n is the total number of items and r is how many you are selecting.

Plug in values:

\frac{9!}{7!(9-7)!} =\frac{9!}{7!*2!}=\frac{9*8}{2!}=36

b) The easiest way is to use a calculator such as a Casio brand or Sharp brand and key in 9P7 to get 181440.

However, you can also use this formula: nPr=\frac{n!}{(n-r)!} where n is the total number of items and r is how many you are selecting.

Plug in values:

\frac{9!}{(9-7)!} =\frac{9!}{2!}=9*8*7*6*5*4*3=181440

You might be interested in
I Need Help Asap, please
GarryVolchara [31]

Answer: 6 1/4 pounds of bananas

Step-by-step explanation:

8-2=6

3/4-1/2=1/4

1/2=2/4

6 0
3 years ago
Solve forj: j + 13 = -6
lubasha [3.4K]

Answer:

gracias amiga o amigo x los puntos

6 0
3 years ago
Read 2 more answers
Solve for t.D=1/4πx^2t
eimsori [14]

I just need answers sport

3 0
4 years ago
What is true about this graph? Select all that apply.
schepotkina [342]

Answer:

E, B and A

Step-by-step explanation:

8 0
3 years ago
PLEASE HELP ILL GIVE YOU 50 POINTS
Stella [2.4K]

Answer:

Step-by-step explanation:

D.closed series circuit

3 0
3 years ago
Other questions:
  • Paul is 2 years younger than patricia. Daniel is 25% older than Patricia. Ten years ago, Daniel was 50% older than Patricia. How
    10·1 answer
  • Which line or segment is tangent to circle G?
    11·2 answers
  • Alisa says it is easier to compare the numbers in Set A (45,760 and 1,025,680) than the numbers in Set B (492,111 and 409,867).
    11·1 answer
  • Please help, it’s a test and i don’t understand PLSPLS I HAVE LESS THAN AN HOUR!!!!
    7·1 answer
  • Help please! Find the difference between the measure of the largest angle and the measure of the smallest angle in the triangle
    9·1 answer
  • B is the midpoint of AC. A has coordinates (-3, 4) and B has coordinates (-1 ½, 1). Find the coordinates of C.
    10·1 answer
  • if 3 more than 5 times a number is seven more than three times that number, what is the result when the number is added to 10
    5·1 answer
  • 05.02 LC)
    12·1 answer
  • What is the answer???
    6·2 answers
  • What is f^-1(11) when f(x) is x squared-3 / 2
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!