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damaskus [11]
3 years ago
12

A playground is being designed where children can interact with their friends in certain combinations. If there is 1 child, ther

e can be 0 interactions. If there are 2 children, there can be only 1 interaction. If there are 3 children, there can be 4 interactions. If there are 4 children, there can be 9 interactions. How many interactions will there be for 8 children? A. 49 B. 64 C. 36 D. 40
Mathematics
1 answer:
nikklg [1K]3 years ago
5 0

The answer to this question is option A. 49

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The mathematical expression 9€ T means
Kaylis [27]

Answer:

Given mathematical expression means that '9 is a member of the set T'.

Step-by-step explanation:

We are given the mathematical expression,

' 9 € T '.

In words, it means '9 belongs to T'.

That is, 'the element 9 belongs to the set T' i.e. '9 is a member of the set T'.

Hence, the given mathematical expression means that '9 is a member of the set T'.

7 0
3 years ago
find the missing side. round to the nearest tenth. use pythagorean theorem to find the third side length​
emmasim [6.3K]

Answer:

x is tangent of 39 = x/ 19, tangent of 39 is 3. 615...... then 19 multiply by 3.615....., x would get 68. 68

Step-by-step explanation:

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3 years ago
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Anit [1.1K]

Answer:

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3 years ago
Help its due in 15 mins ​
Anton [14]

Answer:

\sqrt{44} = 2\sqrt{11}

Step-by-step explanation:

Apply pythagorean theorem:

ABD is a right triangle with angle ADB = 90

hence AD = \sqrt{AB^{2} - BD^{2}  } where BD = 10 because it is half of BC

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8 0
2 years ago
8y cubed +3xy+2y squared - 4xy
Irina-Kira [14]

Answer:

8y^2 + 3xy + 2y^2 - 4xy

8y^2 + 2y^2 + 3xy - 4xy

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Step-by-step explanation:

8y^2 + 3xy + 2y^2 - 4xy

8y^2 + 2y^2 + 3xy - 4xy

10y^4 - 1xy

7 0
3 years ago
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