The bag contains 3 red marbles, 4 yellow and 5 blue.
In total we have 12 marbles.
The probability of selecting one blue one will be 5 out of 12.
We will select for a second time, after replacing the first marble. This second case, the probability will be again of 5 out of 12.
Both events are independent because we are replacing the first selected marble. The probability of two independent events to occur is the product of the individual probability of each event. Then, the probability of selecting a blue marble in the 2 events is:
Answer:
2 2/5
Step-by-step explanation:
Dividing two fractions is the same as multiplying the first fraction by the reciprocal of the second fraction. First convert the first into the improper fraction -8/5. Now because when dividing fractions you keep the first on, change to multiplication and flip the second equation you have
-8/5 x -3/2=?
Now you just multiply across as you would and normal time multiplying fractions. Remember a negative divided by a negative is a positive! And not after you keep, change, flip and multiply you are left with 24/10. Which is equal to 12/5 but you wanted a mixed number so we convert it into 2 2/5
150 because
45/x=30/100 =
30x=4500
divide both by 30
and x=150
Answer:
1/9x
Step-by-step explanation:
The parenthesis around the 9x means that the -1 exponent goes to the whole thing (the 9x) To "fix" a negative exponent push the 9x across a fraction bar to make the exponent positive. When you push the 9x down across a fraction bar that leaves a 1 on top of the fraction, that has nothing to do with the 1 exponent. Its a 1 on top because when you push the 9x down there is nothing left on top so it is a 1.
(9x)^-1
= 1/9x
To be clear, this is a 1 one top and a 9x on the bottom of a fraction.
I believe the expression would be 0-3.25. Or something to the effect of finding the difference between 0 and 3.25. I hope this helps