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Tom [10]
4 years ago
10

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 3 interactions. If there are 3 children, there can be 9 interactions. If there are 4 children, there can be 18 interactions. How many interactions will there be for 9 children?
Mathematics
1 answer:
Ilia_Sergeevich [38]4 years ago
6 0

Answer:

There will be <u>108</u> interactions for <u>9</u> children.

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X⁴ - 2x³- 11x² + 30x - 20 entre x² + 3x - 2
Setler [38]
What is the question to simplify??
4 0
3 years ago
What is 5×20+2raised to the power 2​
Neporo4naja [7]

Answer:

10,404

Step-by-step explanation:

5x20+2=102

102^2=102x102=10,404

7 0
3 years ago
Could somone help me on this MAD question
olga_2 [115]

The mean absolute deviation of the set of numbers is 5/4

<h3>How to determine the mean absolute deviation?</h3>

The set of numbers is given as:

1 1/2, 0, 4 and 2 1/2

Rewrite the set of numbers as:

1.5, 0, 4 and 2.5

Calculate the mean of the set using:

\bar x = Sum/Count

So, we have:

\bar x = (1.5 + 0 + 4 + 2.5)/4

Evaluate

\bar x = 2

The mean absolute deviation is then calculated as:

M.A.D = 1/n * ∑|x - \bar x|

So, we have:

M.A.D = 1/4 * [|1.5 - 2| + |0 - 2| + |4 - 2| + |2.5 - 2|]

Evaluate the absolute difference

M.A.D = 1/4 * [0.5 + 2 + 2 + 0.5]

Evaluate the sum

M.A.D = 1/4 * 5

Evaluate the product

M.A.D = 5/4

Hence, the mean absolute deviation of the set of numbers is 5/4

Read more about mean absolute deviation at

brainly.com/question/9495630

#SPJ1

3 0
2 years ago
Dale drove to the mountains last weekend. There was heavy traffic on the way there, and the trip took 7 hours. When Dale drove h
matrenka [14]
If you let X = the distance in miles from Dales's house, and understand rate = distance/ time, the rate going to mountains = x/7, and back from mountains is x/5. If dale was 18mph fast going home, the equation would be...
(coming home rate) = (going to mountain rate) + 18 which is
x/5 = x/7 + 18. Then solve for X.
Use the least common denominator = 35 so multiply everything by 35 and you get...

7x = 5x+630
simplify...
2x = 630, then
x = 315 .
Dale live 315 miles away from the mountains.


4 0
4 years ago
Samantha wants to use her savings of $1150 to buy shirts and watches for her family. The total price of the shirts she bought wa
irakobra [83]
The cost of the shirts is stable, so we can subtract $1150 - $84, which = $1066. Now we want to find how many watches we can buy with $1066, or how many times $99 fits into $1066. So divide 1066 by 99 to get 10.77. You can't buy 77ths of a watch, so round it down to 10 and you have your answer. Samantha can buy 10 watches.
8 0
4 years ago
Read 2 more answers
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