Thank you for the opportunity to help you with your question!
z varies directly with x and inversely with y hence we can write
z = kx/y ; where k is the constant of variation it is given that when x = 6 and y = 2, z = 15.
z varies jointly with x and y.
z = kx/y
15 = (6/2)k
15 = 3k
hence the relation becomes z = 5x/y
Now we need to find z = ? when x = 4 & y = 9
hence z = 5 * 4 * 9 =180 Answer
You can use my
promo code: Saroj N , while signing up at study pool and enjoy $10
Please find the solution enclosed here with .. In case of any doubt please feel free to ask… Do not forget to best my answer… If you are having some other problem please feel free to contact me for quick & quality services..