Step-by-step explanation:
Let Kim's sister age be x.
Kim's age 2x
<u>According to the question</u> :
2x + x = 42
X = 14
Kim's age = 28 years
Kim's sister's age = 14 years
Answer:
if you decrease 10 kg by 10% you get 9 kg
Answer:
a = 5, b = -12
Step-by-step explanation:
By basic factoring, you get 9 - 12i +
. Since
is simply -1, the expression evaluates to 9 - 12i - 4, which is 5 - 12i.
Answer:
3/16 or 0.1875
Step-by-step explanation:
Since she remembers the first two digits, she only has to guess the last two digits. If both digits are greater than 5, there are 4 possible alternatives for each digit (6, 7, 8 or 9).
In three tries, the probability that she will get it right is:

The probability she will get access to her account is 3/16 or 0.1875.