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 !
Answer:
b/4 +b + b-8 =73
2b + b/4 = 81
9b/4 = 81
9b =81 * 4
b = 9* 4
b = 36
The sides of the triangles are 9 inch, 28 inch and 36 inch respectively
Step-by-step explanation:
Step-by-step explanation:
3,500×4×2/100= 280/100 = $2.80
Take out of parentathese
(3*2a)+(3*8b)-9b-a
6a+24b-9b-a
Combine like terms
(6a-a)+(24b-9b)
Answer:
5a+15b
C cuz if it opens down a is negative and also it’s a parabola so it’s quadratic
