Going against the current, a boat takes 7 hours to make a 120 mile trip. when the boat travels with the current on the return trip, it takes 4.5 hours. if x is the speed of the boat is still water and y is the speed of the current, which of the following system of equations could be used to solve the problem?

Acircle has the equation (x-2)^2 +y^2 =5. what are the coordinates of the circle's center?

(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 .

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )