Answer:
12.5%
Step-by-step explanation:
sum the parts of the ratio 1 + 3 + 4 = 8 parts
8 parts represents 100%, hence
1 part =
= 12.5% ← Andy's percentage of the total
Decimal pt after 3 digits in first number so 3 digits in product.
Solution: The given random experiment follows Binomial distribution with 
Let
be the number of adults who use their smartphones in meetings or classes.
Therefore, we have to find:

We know the binomial model is:






Therefore, the probability that fewer than 3 of them is 0.1111
Answer:
y=5-4x / 2
I cant do the fraction symbol