Answer:
undefined
Step-by-step explanation:
the square root of a negative number doesnt exist in the set of Real numbers
Answer:
Approximately, 0.05
Step-by-step explanation:
In case you meant 38 divided by 2 = 19
Step-by-step explanation:

Answer:
(a) 0.023%
Step-by-step explanation:
Fill in the given number and do the arithmetic.
A(12) = 0.23·12·e^(-0.4·12) ≈ 0.0227 ≈ 0.023
The percentage of alcohol in the blood 12 hours after the drink is about 0.023.