Oscar spent two thirds hour each night doing homework for five nights this week. How many hours of homework did Oscar complete this week? seven and one half hours
three and one third hours
two and one third hours
one and one fifth hours

The answer is 7.5 hours.

Step-by-step explanation: This is because if he spent 2/3 of every night doing homework for five days then he would spend a lot more than 3 hours and the other answers are even below 3 so thats gotta be incorrect.

Hope this helps.

The answer is three and one third hours

Step-by-step explanation:

If Oscar spent two thirds an hour for five nights doing homework, then we would have night one is two thirds, the next night he spent one and one third, the next night would be 2 hours total, then the next night would add another 2/3 making it 2 2/3, finally the last night is two thirds of an hour making it a total of 3 and 1/3 hours spent on homework that week. Hope this helps

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify