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Vilka [71]
3 years ago
6

What’s the answer for 12?

Mathematics
1 answer:
Lisa [10]3 years ago
6 0

Answer:

- 3 \sqrt{4 \times 4 \times 3}  \\  - 3 \times 2 \times 2 \sqrt{3 }  \\  - 12 \sqrt{3}

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Suppose ten students in a class are to be grouped into teams. (a) If each team has two students, how many ways are there to form
ValentinkaMS [17]

Answer:

(a) There are 113,400 ways

(b) There are 138,600 ways

Step-by-step explanation:

The number of ways to from k groups of n1, n2, ... and nk elements from a group of n elements is calculated using the following equation:

\frac{n!}{n1!*n2!*...*nk!}

Where n is equal to:

n=n1+n2+...+nk

If each team has two students, we can form 5 groups with 2 students each one. Then, k is equal to 5, n is equal to 10 and n1, n2, n3, n4 and n5 are equal to 2. So the number of ways to form teams are:

\frac{10!}{2!*2!*2!*2!*2!}=113,400

For part b, we can form 5 groups with 2 students or 2 groups with 2 students and 2 groups with 3 students. We already know that for the first case there are 113,400 ways to form group, so we need to calculate the number of ways for the second case as:

Replacing k by 4, n by 10, n1 and n2 by 2 and n3 and n4 by 3, we get:

\frac{10!}{2!*2!*3!*3!}=25,200

So, If each team has either two or three students, The number of ways  form teams are:

113,400 + 25,200 = 138,600

6 0
3 years ago
PLZZZZZZ HeLp
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Answer:

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Step-by-step explanation:

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8 0
3 years ago
Suppose an isosceles triangle has two sides of length 42 and 35, and that the angle between these two sides is 120 degree. what
Citrus2011 [14]
Suppose that a=42, b=35, c is unknown, and C = 120°

c^2 = a^2 + b^2 -2ab(cosC)

c^2 = 42^2 + 35^2 -(2*42*35*cos120)

(cos120=-0.5)

c^2 = 1764 + 1225 -(2940*cos120)

c^2 = 2989 -(2940*-0.5)

c^2 = 2989+1470

c^2=4459

c= \sqrt{c^2} 

c=\sqrt{4459}
3 0
3 years ago
Pleaseee pleaseee help 10 mins left
Lesechka [4]

Answer:

fraction is 44/100

decimal form is 0.44

percentage is 44%

Step-by-step explanation:

follow me for my effort

4 0
2 years ago
What is answer to 4/5 - 1/10
Zanzabum

Answer: 7/10

0.70000 as a decimal

5 0
2 years ago
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