Answer:
theoretical probability
Step-by-step explanation:
This is theoretical probability. The 7 pieces of paper each bear one number from {1, 2, ... , 6, 7}. There is only one piece of paper marked 7. So the probability of drawing a 2 is 1/7.
(2x+1)(x+5) is the answer.
Answer:
28
Step-by-step explanation:
20+26+26 = 72
to get the mean of four numbers means
(x+x+x+x) / 4 = 25
so
100-72=28