Answer:
The probability of guessing the correct code is 
, If you were given ten tries to guess it.
Step-by-step explanation:
First of all, we need to find the total possible combinations due the code is composed by numbers from zero to nine are individually selected at random and combined to make a code that contains a six-digit number. So we obtain 
.
Then, as we have ten tries to guess, 
, is the probability of guessing the correct code, one out one houndred thousand.
Sub in given values to get 2 equations.
Solve system using elimination. Add the equations together, cancelling out 'b'
Sub into first equation to get value for 'b'
First one is 3
Second one is 6
I hope this helps, I wrote the new equation each time you get a new number and where it should be placed
Okay. When it comes to multiplying decimals, you multiply them just like you would do whole numbers. However, solving them by paper, you would add a decimal point into the answer, depending on how many numbers are behind the decimal point in the numbers being multiplied. In this case, the decimal point will go in front of two numbers, because there are two numbers behind the decimal point in -1.2 and 0.4. Know that the answer will be negative, because there is one negative and one positive number.
Multiply both numbers. -1.2 * 0.4 is -0.48. There. The product is -0.48.
