2.21 x 10^17 and the answer is 2.21e+17
Answer:
a) 13
Step-by-step explanation:
Answer:
A.
Step-by-step explanation:
Just by looking at the way the graph is pointing you can eliminate answer choices B and C because the set up of this equation will be x = not y =
So the set up of the equation is
x=2(y-(the y value of the vertex)squared+(the x value of the vertex)
by using this you can eliminate option D and see that the answer is A
Total number of ways to make a pair:
The first player can be any one of 7 . For each of those . . .
The opponent can be any one of the remaining 6 .
Total ways to make a pair = 7 x 6 = 42 ways .
BUT ... every pair can be made in two ways ... A vs B or B vs A .
So 42 'ways' make only (42/2) = 21 different pairs.
If every pair plays 2 matches, then (21 x 2) = <em><u>42 total matches</u></em> will be played.
Now, is that an elegant solution or what !