z varies jointly as x and y and inversely as w. if z = 16 when x = 5, y= 4 and w =10, find z when x =6, y = 8, and w = 12.​

it would open into a square depending on the type of envelope i’m not sure about the second part

step-by-step explanation:

a and d

isaiah walks 3 miles due north, turns and then 5 miles due east. how far is he from his starting point?

a^2 + b^2 = c^2

let c = distance from starting point.

(3)^2 + (5)^2 = c^2

9 + 25 = c^2

34 = c^2

sqrt{34} = sqrt{c^2}

sqrt{34} = c