Answer:
The probability of a correct guess on the first try is 0.000244 or 0.0244%.
Step-by-step explanation:
Given:
Number of digits in the pin code = 6
Number of keys in each digit = 4
So, in order to get the correct pin code, the key selected in each digit should be correct.
So, there will be only 1 correct key in each digit.
Now, probability of selecting a correct key in first digit is given as:
Now, there are 6 digits in the pin code and repetition is allowed. So, the probability of selecting the correct key in the remaining digits will also be equal to 0.25.
Therefore, the combined probability of selecting the correct pin code in the first try is the product of probabilities of selecting each correct key in each of the digits.
So,
Therefore, the probability of a correct guess on the first try is 0.000244 or 0.0244%.
Hello
<span>the slope of the line, on the x slope-its 6, on the y slope its -2 is : (-2)/(6) = -1/3</span>
12 eggs for $1.12
3 eggs for $?
As you can see, to get from 12 eggs to 3 eggs, you divide by 4, so do the same with $1.12 to get $0.28
The cost of 3 eggs is $0.28
(1/3)r + (2/3)r = -2 -1
1r = -3
r = -3
Hope this helps
Assuming you'd like to have it factored:
Given:
<span>18x^4 + 12x^2y + 2y^2
First take out common factors to all three terms, 2
=2(9x^4+6x^2y+y^2)
Rewrite with x^2 as a group (attempting to factor as perfect square)
=2((3x^2)^2 + 2(3x^2)(y) + y^2)
factor into perfect square
=2(3x^2+y)^2</span>