1.
Consider a group of n objects. Assume we want to form groups of r, from these n objects.
There are in total

many ways of doing so.
where, r! is "r factorial", calculated as 1*2*3*...*(r-1)*r
2.
C(x, 2) is the total number of pairs out of x objects, that we can form.
so let the x objects represent the x teams, and 2, represent a group of 2, which means a game.
The total number of games is:
n(x)=2*C(x, 2) =

Remark, we multiplied by 2, since there will be 2 matches for each pair of teams.
Answer:
Answer:
Airplane A is the slowest
Step-by-step explanation:
Airplane A = 400 m/s
Airplane B = 760 m/s
Airplane C = 740 m/s
Hope this helps!
There are 48 photographs in total and he puts them inn 8 equal rows. With this, you have to divide the total amount of photographs (48) by the amount of equal rows (8) to see how many photographs are in each row.
48/8 = 6 photographs in each row.
To check, you can simply do the inverse operation which would be:
6 x 8 = 48
As you can see, the total of 48 still remains.
The answer is:
There are 6 photographs in each row.
What it is asking is 8 times what equals 48. The best way to do this is by doing the opposite operation. 48 divided by 8 equals 6. Then if you put it in the other way you get 8(6)=48 which works out. So the answer is 6.
The interval from $9 to $10 contains the largest number of sandwich prices. Option B
<h3>Which is a correct statement regarding sandwich prices, based on the histogram?</h3>
Generally, A graph known as a histogram displays the frequency of occurrence of numerical data via the use of rectangles. The frequency of a variable's distribution is shown by its position along the vertical axis, which is the height of a rectangle (the amount, or how often that variable appears).
In conclusion, The greatest number of sandwich costs may be found in the range from $9 to $10. Alternative B
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