Sally can paint a room in 7 hours while it takes steve 4 hours to paint the same room. how long would it take them to paint the room if they worked together?

What is the value of the expression below? (81^2)^1/8

Solve for x -2.3(r - 1.2 ) = -9.66 enter you answer as decimal.

(least common multiples) the answer that i had in the 1st step was lcm of airline tickets sold=72. idk if that even matters but just in case. ! three co-workers are busy selling airline tickets over the phone. in an 8-hour day, charles can sell 8 airline tickets, ann can sell 9 airline tickets, and michelle can sell 6 airline tickets. step 2 of 2: what is the smallest number of 8-hour days needed for each of them to achieve the same number of sales? it takes charles . it takes . it takes .