Answer:
2/5
Step-by-step explanation:
in 4/10, both the numerator (4) and denominator (5) are multiples of 2, as 4 = 2 * 2 and 10 = 2 * 5. thus, we can divide both the numerator and denominator by 2 to get
(4/2) / (10/2) = 2/5 as our answer.
An atm personal identification number (pin) consists of four digits, each a 0, 1, 2, . . . 8, or 9, in succession.
a. How many different possible pins are there if there are no restrictions on the choice of digits?
Solution: The are total 10 numbers between 0 and 9.
Also there are no restrictions on the choice of digits. Therefore, the possible number of different PINs is:


Therefore, there are 10,000 different possibles PINs.
If Zia is 8 years younger than twice her sisters Sasha's age. This must be the expression.
2S = Z-8
<em>Where:</em>
Z is Zia's age
S is Sasha's age
Now we rearrange for Z:
Z = 2S + 8
Hope this helps!