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kari74 [83]
4 years ago
15

In how many ways can you select two people from a group of 20 if the order of selection is not important?

Mathematics
1 answer:
Svetllana [295]4 years ago
3 0
That is 20C2 The number of combinations of 2 from 20 

= 20 * 19 / 2*1  = 190 answer
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Step-by-step explanation:

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Binomial expansion of (x+2)^4
N76 [4]
The two terms are x and 2, thus, x+2 is a binomial.  We have to multiply the binomial by itself four times since it is raised to 4th power.

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4 0
3 years ago
How can I find the dimensions that equal 36?​
Valentin [98]

Answer:

The dimensions that equal 36 can be a rectangle, based off the length and width within cm, the length will equal to 9 and width will equal to 18

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3 0
2 years ago
Solve for the value of a.
KonstantinChe [14]

Answer:

a=11

Step-by-step explanation:

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3. 9a = 99

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Hope this helped!

8 0
3 years ago
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