Answer:
The correct option is 2.
Step-by-step explanation:
Let A be the event that the college student belongs to a health club and B be the event that the college student lives off-campus.
The probability that a college student belongs to a health club is 0.3.
The probability that a college student lives off-campus is 0.4.
The probability that a college student belongs to a health club and lives off-campus is 0.12.
The probability that a college student belongs to a health club OR lives off-campus is
The probability that a college student belongs to a health club OR lives off-campus is 0.58. Therefore the correct option is 2.
Simple....
8*3=24
8+3=11
Thus, your answer.
Answer:
x=3
Step-by-step explanation:
add 2 to both sides
subtract 7 from both sides
divide by 9 on both sides
According to the problem we start with 6000 gal of E10 which means there is 10% of ethanol in this 6000, with ths information we can calculate the amount of ethanol already in the mixture:
The relationship between ethanol and total fluid can be represented like this:
Based on this relationship we can build the one that we are looking for:
the total solution will be:
where X is the E5 solution volume
and the TotalEthanol would be:
where E5ethanol (5% Ethanol 95% Gasoline) would be:
Now replacing in the relationship we found before:
Solving for X:
We should mix 1500 gal of E5 to make an E9 mixture