Seudónimo Seudónimo
  • 08-11-2017
  • Mathematics
contestada

y and x have a proportional relationship, and y = 25 when x = 60. What is the value of x when y = 30?
a.25
b.36
c.50
d.72

Respuesta :

altavistard
altavistard altavistard
  • 08-11-2017
the equation governiong this relationship is y = kx.  Since y = 25 when x = 60,
25 = 60k, and k=(5/12).  Thus, the equation is   y = (5/12)x.

If y = 30, then 30 = (5/12)x.  Mult. both sides by 12/5 to obtain the value of x:

(12/5)(30) = 360/5 = 72
Answer Link
26pattersons 26pattersons
  • 13-01-2021

Answer:

x= 72

Step-by-step explanation:

I have a answer book.

Answer Link

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