B. 21.39 because I said so and I did all the calculations and apparently I need more than 20 words but there is your answer enjoy
Answer:
Each of the 7 friends could be present or not present (2 cases) at the party giving total of 27 scenarios.
Since at least one must be present we exclude the case that none of them is present. So the answer would be:
27−1=127.
Step-by-step explanation:
i actually dont know but can you report me and dont ask
Answer:
I suppose that's 7.8% of 15.
Step-by-step explanation:
7.8/100=0.078
0.078*15=1.17
