sierika6167 sierika6167

02-12-2019
Mathematics

contestada

If y varies directly as x, and y is 400 when x is r and y is r when x is 4 what is the numeric constant of vanation in this relation

Respuesta :

annabanana08050 annabanana08050

02-12-2019

Answer:

y = 10*x

Step-by-step explanation:

y = kr --> 400

r = 4k

400 = k (4k) = 4k^2

k^2 = 400/4 = 100

k = sqrt(100) = 10

k = 10

Answer Link

Otras preguntas

Solve for s. -10 − 8s − 1 = -7 − 4s

Alexander invested $850 in an account paying an interest rate of 4.7% compounded continuously. Assuming no deposits or withdrawals are made, how much money, to

Answer to the question below is:

can someone explain me this and give me a example

Thirty years after the civil war the south became very rich, overwhelming agrarian and economically dependent true or false

Find the volume of the rectangular prism. 19 cm 9 cm 2 cm

a salt solution will conduct electricity but if sugar solution will not explain why

Richard cooks at a restaurant. He is making meatballs, and the recipe calls for î cup of bread crumbs. He plans to double the recipe. Which is the correct expre

How do I find a perimeter

If f(x)=-2x+8 determine the value of y for each x value 7,8,9