B, X is any number greater than or equal to 19.
Answer: A. 9
Step-by-step explanation:
In the given tree diagram , there are 3 branches , to each branch there are 3 leaf nodes.
By using Fundamental counting principal ,
Number of possible outcomes for the tree diagram = (Number of branches) x (Number of leaf nodes)
![=3 \times 3\\\\=9](https://tex.z-dn.net/?f=%3D3%20%5Ctimes%203%5C%5C%5C%5C%3D9)
Hence, the number of possible outcomes for the tree diagram = 9
So, the correct option is A. 9.
D. 25% as there are 8 sections and two wanted outcomes this can be simplified into a 1/4 so 1/4=25%
Answer:
10.74s or faster (lower)
Step-by-step explanation:
The lowest time out of all of them is 10.75, so to all the 5th swimmer needs to do to win is to undercut the swimmer who got 10.75s by a 100th of a second. i.e 10.74s or faster (lower) would win.