Answer:
X=3.1
(4•3.1)+(4•3.1)
Step-by-step explanation:
4 of 6.2 is equal to 24.8
4•(6+0.2) = 24.8
4•3.1=12.4•2=24.8
12.4+12.4=24.8
(4x)+(4×)=24.8
Answer:
1,404,000 unique passwords are possible.
Step-by-step explanation:
The order in which the letters and the digits are is important(AB is a different password than BA), which means that the permutations formula is used to solve this question.
Permutations formula:
The number of possible permutations of x elements from a set of n elements is given by the following formula:

In this question:
2 digits from a set of 10(there are 10 possible digits, 0-9).
3 characters from a set of 26. So

1,404,000 unique passwords are possible.
Answer:
12 minutes
Step-by-step explanation:
The radius is half the diameter, so 18*2 = 36 inches
The diameter is 36 inches.
Divide the diameter by the rate, 36/3 = 12 minutes
Your answer is 12 minutes