Answer: 4 minutes
Step-by-step explanation: divide 12 and 3
Answer:
It cost 30$
Step-by-step explanation:
Since 50% is 1/2 we put 80/2
so we have 40
25% is 1/4 we put 40/4=10 40-10=30
so the answer is 30
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.
Answer:
Step-by-step explanation:
(2/5)x + 9 = 9 is equivalent to (2/5)x = 0
"Nine more than two-fifths of a number is nine" is correct.
Answer:
Step-by-step explanation:
One unit up: y = x + 1
One unit down: y = x - 1
One unit to the left: y = x + 1
One unit to the right: y = x - 1