Answer: 16, 20, 20
Step-by-step explanation:
1st Step: 56-20.
2nd Step: 36-20
The last number is 16.
Assuming that _ is meant to be a minus sign,
12p - 6k
3(4p) - 3(2k)
51 inches is 2 inches more than the mean, which is 1 standard deviation.
Using the 68, 95, 99.7 rule:
100-68 / 2 = 16% would be taller than 51 inches.