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
makkiz [27]
2 years ago
13

In how many ways can 3

Mathematics
1 answer:
statuscvo [17]2 years ago
3 0
<h3>Answer:  2300</h3>

Work Shown:

_{n} C _{r} = \frac{n!}{r!(n-r)!}\\\\_{25} C _{3}  = \frac{25!}{3!*(25-3)!}\\\\_{25} C _{3}  = \frac{25!}{3!*22!}\\\\_{25} C _{3}  = \frac{25*24*23*22!}{3!*22!}\\\\ _{25} C _{3}  = \frac{25*24*23}{3!}\\\\ _{25} C _{3}  = \frac{25*24*23}{3*2*1}\\\\ _{25} C _{3}  = \frac{13800}{6}\\\\ _{25} C _{3}  = 2300\\\\

You might be interested in
Alexis wants to make a paperweight at pottery class. He designs a pyramid-like mode l with a base area of 100 square centimeters
olga55 [171]

Answer:

\frac{3}{2} g/cm²

Step-by-step explanation:

First, we need to find the volume of the prism. The volume of a square pyramid is V = Bh/3

B = 100 cm²

h = 6 cm

V = 100 cm² * 6 cm /3

V = 600 cm³ /3

V = 200 cm³

Next, we need to solve for the density based on the desired volume and mass.

m = mass = 300 g

V = volume

density = m/V

density = 300 g / 200 cm³

density = 3/2 g/cm³

The lowest possible density of the material to make the paperweight would be \frac{3}{2} g/cm²

4 0
3 years ago
A test consists of 20 problems and students are told to answer any 10 of these questions. In how many different ways can they ch
Furkat [3]
We must find UNIQUE combinations because choosing a,b,c,d... is the same as d,c,b,a...etc.  For this type of problem you use the "n choose k" formula...

n!/(k!(n-k)!), n=total number of choices available, k=number of choices made..

In this case:

20!/(10!(20-10)!)

20!/(10!*10!)

184756
3 0
3 years ago
Read 2 more answers
(Please help a sister out)!
MrRissso [65]

Answer:

Distributive

Step-by-step explanation:

when you distribute 3 to x, 3y, and 5, you get 3x+9y+15, which is equivalent to the other expression when you simplify it

5 0
3 years ago
Three friends are selling items at a bake sale. May makes $23.25 selling bread. Inez sells gift baskets and makes 100 times as m
victus00 [196]
May makes $23.25, Inez makes $2325, and Carolyn makes $232.50
6 0
3 years ago
Read 2 more answers
Please help! This is due at 11:59pm (the problem is stated in the photo)
SVETLANKA909090 [29]

Answer:

y=-5x

Step-by-step explanation:

this is because slope intercept form is y=mx+b

if m= -5 and b=0 the answer would be

y=-5x+0

simplified it would be

y=-5x

7 0
4 years ago
Read 2 more answers
Other questions:
  • Isaac wants to join a gym. He checked out the membership fees at two gyms.
    5·2 answers
  • you are having a garage sale. At Lowe's, a cash box cost $10 and for sale signs cost $7 each. You spent a total of $38 before ta
    13·2 answers
  • Please make sure that it's the correct answer!
    12·2 answers
  • E
    5·2 answers
  • Kim rented a bike from Kayla's Bikes. It cost $20 plus $8 per hour. If Kim paid $52, then she rented the bike for how many hours
    15·2 answers
  • Quien fue el dueño de bmw
    8·1 answer
  • The team won 10 of its 30 games and lost the rest. What was the team's win-loss ratio?
    9·1 answer
  • May I please receive help?
    7·1 answer
  • Round of the underlined digit in each day decimal number​
    8·2 answers
  • 4/10x - 2x + 8/5 = 4/5
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!