Answer:
15.15% probability that both months (different) have less than 31 days.
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
Also, the order of the months is not important. For example, picking July and August is the same as picking August and July. So the combinations formula is used to solve this problem
Combinations formula:
is the number of different combinations of x objects from a set of n elements, given by the following formula.
There are 12 months, of which February, April, June, September and November, that is, 5 of them, have less than 31 months.
Desired outcomes:
Picking 2 months from a set of 5(those with less than 31 days). So
Total outcomes:
Picking 2 months from a set of 12(all the months). So
Probability:
15.15% probability that both months (different) have less than 31 days.
Answer:
Step-by-step explanation:
To solve for the variable , start by subtracting from both sides of the equation:
Then, subtract from both sides of the equation:
Therefore,
-
To check your work, simply substitute the solved value of into the initial equation:
Multiply:
Add:
Since both sides of the equation are equal to each other, our solution is correct!
Answer:
first one is 123
second one is 106
third one is sally
Step-by-step explanation: