rockyhascurls rockyhascurls
  • 21-10-2020
  • Mathematics
contestada

Suppose y varies directly as x, and y = 7 when x = 2. Find x when y = 21.

Respuesta :

Garden555 Garden555
  • 22-10-2020

Answer:

Step-by-step explanation:

y = k x X

7 = k x 2

7/2 = k...............1

hence y = 7/2x (substituting eq 1)

y = 21

therefore, x = 2y/7

x = 2 x 21

         7

x = 2 x 3

x = 6    

Ver imagen Garden555
Answer Link

Otras preguntas

(h+k)(1) is (k-h)(4) is (k/h)(3) is (h•k)(0) is (k •h)(0) is (h•k)(3) is h(k(-2))
What does that mean about the densities of the phases of water? The solid state is the most dense, followed by the liquid state, then the gas state. The solid s
The wood-cutter's song - the ploughboy's, on his way in the morning, or at the noon intermission, or at sundown; The delicious singing of the mother - or of the
no this is not a question :)
a number is tripled and then increased by four. the result is seventy-nine. what is the original number?
Please select the word from the list that best fits the definition
Find the degree of a polynomial.
help its timed 12 pts​
What did Nikola Tesla and Marie Curie both have in common?
Suppose y varies inversely with x, and y = a when x = a 2. What inverse variation equation relates x and y ? a.y = a2xa2xb.y = a 3xc.y = a3xa3xd.y = ax