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-BARSIC- [3]
3 years ago
13

There are 20 students in the high school glee club. They need to pick four students to serve as

Mathematics
2 answers:
gayaneshka [121]3 years ago
6 0

Answer:

4845 ways

Step-by-step explanation:

To solve this problem we use the formula of combinations

nCr=\frac{n!}{r!(n-r)!}

Where n is the total number of students that can be chosen and you choose r from them.

So

n = 20\\r = 4

Note that in this case the order in which the 4 students are chosen does not matter.

Then

20C4=\frac{20!}{4!(20-4)!}

20C4=\frac{20!}{4!*16!}=4845\ ways

devlian [24]3 years ago
4 0

Answer:

4845

Step-by-step explanation:

Total number of students : 20

Students to be picked : 4

Does order matter? : No

Use combination formula (see attached)

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3 years ago
Identify the volume of the figure in cubic units.
Alekssandra [29.7K]

Answer:

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Step-by-step explanation:

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6 0
3 years ago
Are y = 1/4 -2 and y = 1/4 + 2 parallel?
zhenek [66]

Answer:

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3 0
3 years ago
HELP MEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
sasho [114]
Answer is 54^2.

since there are triangles in this one, it is easier to do this. all you have to do is make boxes in and since there are angles, outside the lines. like this picture.

the orange is 1
red and dotted is 2
blue is 3
purple is 4(a regular box which should be easy to count.

all you have to do is add up all the boxes within the boundaries.
boundary 1: 12
boundary 2: 18
boundary 3: 6
boundary 4: 36

now when the boundary has a triangle in it (1, 2, & 3) divide the number you got in half or 2.
boundary 1: 6
boundary 2: 9
boundary 3: 3

the ractangle box doesn't not get divided.
boundary 1: 6
boundary 2: 9
boundary 3: 3
boundary 4: 36

add all the numbers you got now for each boundary and that would be your area squared.

6+9+3+36=54^2

so your final answer is 54^2.

i hope this helps you.

3 0
3 years ago
The speaker that has a regular price of $90 is on sale for Cyber Monday Amazon with 30% off. What is the sale price with 6% tax?
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Answer:

your answer would be $66.78 !

Step-by-step explanation:

hope this helps you! :)

6 0
3 years ago
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