X = 16 is the exact value.
False
_____
The Pythagorean theorem tells you
a² + b² = c²
for sides "a" and "b" and hypotenuse "c" of a right triangle.
Answer: Our required probability is 0.99338.
Step-by-step explanation:
Since we have given that
n = 100
p = 0.200
So, 
So, we can apply normal approximation.
Mean = 20
Standard deviation = 
Since 
So, Probability that fewer than 30 but a packet after testing a free sample is given by

Hence, our required probability is 0.99338.
If I tablet has 500mg, then to find out how many mg 3 tablets have, you simply multiply 500 by 3.
Final answer is 1500 mg