Aplane descends to 5/6 of its cruising altitude, a. what is the new altitude? write an algebraic expression! i really need ! will mark 50

Can someone me and do the problem plz so i can understand it more better

How can you tell when x and y are not directly proportional?

Consider this equation. |y + 6| = 2 what can be concluded of the equation? check all that apply. there will be one solution. there will be two solutions. the solution to –(y + 6) = 2 will be also be a solution to the given absolute value equation. the solution(s) will be the number(s) on the number line 2 units away from –6. the value of y must be positive since the variable is inside absolute value signs.