The ratio is 0.394 cm. / 1 in.
This question is easier than it seems. If there are 9 consecutive integers with the mean being 16, then 16 must be the median. So just add four on top and four below 16 to give you your range of 9 values, 12-20. 12+13+14+15+16+17+18+19+20=144, 144/9=16. So the mean of the first four numbers is (12+13+14+15)/4= 13.5. If you check, 13.5 is also the median of these four numbers.

Because

is singular, we have

from which it follows that either

or

.
Answer: Probability that 3 are consonants and 2 are vowels is 0.3996.
Step-by-step explanation:
Since we have given that
Number of unique consonant tiles = 10
Number of unique vowel tiles = 5
Total number of tiles = 10+5=15
we need to pick 5 tiles randomly,
So, Probability that 3 are consonants and 2 are vowels is given by

Hence, Probability that 3 are consonants and 2 are vowels is 0.3996.