2 years ago

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

Elian's credit card had a balance of $132.20 on April 1. On April 5, he charged $74.50. On April 18, he made a payment of $52. O

FinnZ [79.3K]

Answer:

I iitiriririrrifjjrjr idiocy jdkthink 179.86

5 0

2 years ago

A farmer has 100 m of fencing to enclose a rectangular pen. Which quadratic equation gives the area (A) of the pen, given its wi

inn [45]

A(w)=50w-w2 if the perimeter is 100, I plugged in possible values for the width...I used w=15 and length = 35 for a perimeter of 100. then I plugged these values in the possible equations until I found the correct one giving me an area of 525 (15x35) . I could not think of an easier way.

5 0

3 years ago

Read 2 more answers

If c=12 and d=9 , what is 82-4c+d

Doss [256]

Answer:

Step-by-step explanation:

multiply 4 x c(12)=48

then just plug it in and solve

82-48=34

34+9=43

7 0

3 years ago

Solve the missing variable

melomori [17]

Answer:

110°

Step-by-step explanation:

Angles on a quadrilateral always add up to 360°.

So, 100+95+55 = 250.

360-250 = 110°

8 0

3 years ago

A babysitter earns $6 for 1 h and $18 for 3 h find the slope

julia-pushkina [17]

Answer:

Step-by-step explanation:

goes up 6, goes right one

6 0

4 years ago

Read 2 more answers