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 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

What is the solution to the following equation? 6(x+1)+1 = 25 A. x = 3 B. x = 4 C. x=5 D. x = 2
help me please!!! 70 points!
what is the weight of a person who has a mass of 76 kg?​
Can someone please tell me what the . means when is an equation like this 6 · 3 I don't understand i am only putting 10 points because it is not that important
1. When Adichie was younger, what did a story need to have?
Describe your make-believe country's economic system, including at least one major industry you have to trade with.
What is the LCD for the problem below.5/8−1/7
Look at the picture below to help. pls
What are the benefits enjoyed by the Guthiyars through Guthi in Newar community? In points​pls help..​
Which sources from the bibliography would be most helpful to you if you were conducting research about the future of cities? Why?