Depth of Hank descends = The point he reached - the point where he worked initially
= 57 - 10
= 47 ft
Hence, Hank descends 47 ft.
It's 11040 plants because 92 percent of 12000 is 11040. (Idk if this is the best reasoning but :/)
49 only has one square root, which is 7. There is no other number that you can multiply by itself to get 49
(x+3y)^2
((-5)+3(-6))^2
(-5+3·6)^2
(-5+18)^2
(-5+18)(-5+18)
25-90-90+324
169 is your answer.
