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
Airida [17]
3 years ago
14

Find the value of the combination. 21 C 3 7,980 2,660 1,330

Mathematics
1 answer:
erik [133]3 years ago
4 0
To evaluate the combination we proceed as follows:
21C3
Given nCk we shall have:
n!/[(n-k)!k!]
thus plugging the values in the expression we get:
21!/[(21-3)!3!]
=21!/(18!×3!)
=1330
Answer: 1330
You might be interested in
Question 13 y-5x= -4
Julli [10]

Which variable are we solving for?

For y:

y= 5x-4/ 13


For x:

x= 13y+4/ 5



5 0
3 years ago
Hi what is the answer
mr_godi [17]

Answer:

A = 176.63 cm²

Step-by-step explanation:

Area of circle = π r ²

A = (3.14)(7.5)²

A = (3.14)(56.25)

A = 176.63 cm²

8 0
3 years ago
Read 2 more answers
Plz help me with this ty
Norma-Jean [14]

Answer: $0.14 per fluid ounce.

Step-by-step explanation: $4.48 divided by 32 = $0.14

4 0
3 years ago
Use multiplication and distributive property to find the quotient of 75 divided by 3
mezya [45]
The answer would be 23
4 0
3 years ago
Read 2 more answers
If the range of a normally distributed data set is 25, what's a reasonable estimate for the standard deviation
Ghella [55]

68% will be 1 standrd deviation  either side of the mean  so a reasonable estimate will be (25*0.68) / 2 = 8.5

5 0
3 years ago
Read 2 more answers
Other questions:
  • Write an equation of the graph: a y = |x| translated one unit upward
    11·1 answer
  • Plastic Knives are sold in packs of 18 for 45p. Plastic Forks are sold in packs of 15 for 41p. Jace wants to buy the same number
    7·1 answer
  • A microchip can process 1,280 bits of information in 3.2 x 10 (exponent) -7 seconds. How many bits of information could it proce
    8·1 answer
  • Please be kind and help me on this question.<br> WARNING: only if your good at math thank you
    7·1 answer
  • Norma read a total of 90 books over 15 months. After belonging to the book club for 24 months, how many books will Norma have re
    6·2 answers
  • Seth's family plans to drive 280 miles to their vacation spot. They would like to complete the drive in 5 hours.
    5·1 answer
  • What is a direct proportion.
    12·2 answers
  • Convert 58 to a percent.<br><br> Do not include the "%" sign in your answer.
    11·2 answers
  • The cost to visit a famous tourist attraction in Russia is 442.25 Rubles. What is the cost in USD if the exchange rate is 3 USD
    10·1 answer
  • Write the slope-intercept form of the equation that passes through the point (-2,2) and is parallel to the line y = 3x - 5
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!