2 years ago

Twenty-five students are competing in a Science Fair. In how many ways can 3 students win first, second, and third place?

Mathematics

1 answer:

Irina18 [472]2 years ago

3 0

Answer:

Step-by-step explanation:

$\frac{25!}{(25-3)!} =13800$

You might be interested in

Carlos brought 16 packs of cola to a party, and each pack had 8 cans. Heather brought 9 cans of juice. How many cans did they br

Irina-Kira [14]

Well, If there is 16 packs and 8 in each pack then you multiply 16 and 8 which is 128, then add the extra 9 cans of juice and the answer is 137. Have a good rest of your day/night!!

3 0

3 years ago

Susan's grandparents have a clock in their home that chimes on every hour each day. How many times will the clock chime in a yea

Leto [7]

Just look up how many hours are there In a year

7 0

3 years ago

The total number of students in rolled at Berkmar middle school is 1400 students the ratio of boys to girls is 3 to 4 for the sc

Anna [14]

Given:

Total number of students = 1400

The ratio of boys to girls is 3 to 4 for the school.

To find:

The number of boys and girls.

Solution:

We have, Boy : Girls = 3:4.

Let number of boys be 3x and number of girls be 4x.

Total number of students = 1400

$3x+4x=1400$

$7x=1400$

Divide both sides by 7.

$x=200$

Now,

Number of boys $=3\times 200=600$

Number of girls $=4\times 200=800$

Therefore, the number of boys is 600 and number of girls is 800 in the Berkmar Middle school.

7 0

3 years ago

The coins in the store s cash register total $12.50. The cash register contains only nickels, dimes, and quarters. There are twi

Oduvanchick [21]

Nickels is 0,05 of dolar - n
dimes is 0,1 o dolar -d
quarters is 0,25 of dolar -q
dimes =2nickels
d=2n
quarters=2dimes
q=2d=4n
12,5=n(0,05)+2n(0,1)+4n(0,25)
12,5=0,05n+0,2n+n
12,5=1,25n
n=10
q=4n=40
There are 40 quarters

5 0

3 years ago

6(3x - 7) = 2

Svet_ta [14]

Answer:

distribute first so it would be 18x-42=2

Step-by-step explanation:

8 0

3 years ago